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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<div class="section" id="units-example-code-basic-units-py">
<span id="units-basic-units"></span><h1>units example code: basic_units.py<a class="headerlink" href="#units-example-code-basic-units-py" title="Permalink to this headline">¶</a></h1>
<p>(<a class="reference external" href="../../mpl_examples/units/basic_units.py">Source code</a>)</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">math</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="kn">import</span> <span class="nn">matplotlib.units</span> <span class="k">as</span> <span class="nn">units</span>
<span class="kn">import</span> <span class="nn">matplotlib.ticker</span> <span class="k">as</span> <span class="nn">ticker</span>
<span class="kn">from</span> <span class="nn">matplotlib.axes</span> <span class="k">import</span> <span class="n">Axes</span>
<span class="kn">from</span> <span class="nn">matplotlib.cbook</span> <span class="k">import</span> <span class="n">iterable</span>
<span class="k">class</span> <span class="nc">ProxyDelegate</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">proxy_type</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">proxy_type</span> <span class="o">=</span> <span class="n">proxy_type</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fn_name</span> <span class="o">=</span> <span class="n">fn_name</span>
<span class="k">def</span> <span class="nf">__get__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="n">objtype</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">proxy_type</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">TaggedValueMeta</span> <span class="p">(</span><span class="nb">type</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">bases</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span>
<span class="k">for</span> <span class="n">fn_name</span> <span class="ow">in</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_proxies</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">dummy</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span>
<span class="nb">setattr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span>
<span class="n">ProxyDelegate</span><span class="p">(</span><span class="n">fn_name</span><span class="p">,</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_proxies</span><span class="p">[</span><span class="n">fn_name</span><span class="p">]))</span>
<span class="k">class</span> <span class="nc">PassThroughProxy</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fn_name</span> <span class="o">=</span> <span class="n">fn_name</span>
<span class="bp">self</span><span class="o">.</span><span class="n">target</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">proxy_target</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
<span class="n">fn</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">target</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">fn_name</span><span class="p">)</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">fn</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">)</span>
<span class="k">return</span> <span class="n">ret</span>
<span class="k">class</span> <span class="nc">ConvertArgsProxy</span><span class="p">(</span><span class="n">PassThroughProxy</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">):</span>
<span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">unit</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
<span class="n">converted_args</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">converted_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">))</span>
<span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span>
<span class="n">converted_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">TaggedValue</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">))</span>
<span class="n">converted_args</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">([</span><span class="n">c</span><span class="o">.</span><span class="n">get_value</span><span class="p">()</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">converted_args</span><span class="p">])</span>
<span class="k">return</span> <span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">converted_args</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">ConvertReturnProxy</span><span class="p">(</span><span class="n">PassThroughProxy</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">):</span>
<span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">unit</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="n">ret</span><span class="p">)</span> <span class="o">==</span> <span class="nb">type</span><span class="p">(</span><span class="bp">NotImplemented</span><span class="p">)):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">ret</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">ConvertAllProxy</span><span class="p">(</span><span class="n">PassThroughProxy</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">):</span>
<span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fn_name</span><span class="p">,</span> <span class="n">obj</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="o">=</span> <span class="n">obj</span><span class="o">.</span><span class="n">unit</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
<span class="n">converted_args</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">arg_units</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">]</span>
<span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s1">'get_unit'</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s1">'convert_to'</span><span class="p">):</span>
<span class="c1"># if this arg has a unit type but no conversion ability,</span>
<span class="c1"># this operation is prohibited</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s1">'convert_to'</span><span class="p">):</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">a</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">except</span><span class="p">:</span>
<span class="k">pass</span>
<span class="n">arg_units</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">get_unit</span><span class="p">())</span>
<span class="n">converted_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">get_value</span><span class="p">())</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">converted_args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="s1">'get_unit'</span><span class="p">):</span>
<span class="n">arg_units</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">get_unit</span><span class="p">())</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">arg_units</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="kc">None</span><span class="p">)</span>
<span class="n">converted_args</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">converted_args</span><span class="p">)</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">PassThroughProxy</span><span class="o">.</span><span class="fm">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">converted_args</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="nb">type</span><span class="p">(</span><span class="n">ret</span><span class="p">)</span> <span class="o">==</span> <span class="nb">type</span><span class="p">(</span><span class="bp">NotImplemented</span><span class="p">)):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="n">ret_unit</span> <span class="o">=</span> <span class="n">unit_resolver</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">fn_name</span><span class="p">,</span> <span class="n">arg_units</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="n">ret_unit</span> <span class="o">==</span> <span class="bp">NotImplemented</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">ret</span><span class="p">,</span> <span class="n">ret_unit</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">_TaggedValue</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">_proxies</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'__add__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__sub__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__mul__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__rmul__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__cmp__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__lt__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__gt__'</span><span class="p">:</span> <span class="n">ConvertAllProxy</span><span class="p">,</span>
<span class="s1">'__len__'</span><span class="p">:</span> <span class="n">PassThroughProxy</span><span class="p">}</span>
<span class="k">def</span> <span class="nf">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="c1"># generate a new subclass for value</span>
<span class="n">value_class</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">subcls</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="s1">'TaggedValue_of_</span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">value_class</span><span class="o">.</span><span class="vm">__name__</span><span class="p">),</span>
<span class="nb">tuple</span><span class="p">([</span><span class="bp">cls</span><span class="p">,</span> <span class="n">value_class</span><span class="p">]),</span>
<span class="p">{})</span>
<span class="k">if</span> <span class="n">subcls</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">:</span>
<span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">[</span><span class="n">subcls</span><span class="p">]</span> <span class="o">=</span> <span class="n">basicConverter</span>
<span class="k">return</span> <span class="nb">object</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="n">subcls</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">TypeError</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">cls</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">:</span>
<span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">[</span><span class="bp">cls</span><span class="p">]</span> <span class="o">=</span> <span class="n">basicConverter</span>
<span class="k">return</span> <span class="nb">object</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="n">value</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="o">=</span> <span class="n">unit</span>
<span class="bp">self</span><span class="o">.</span><span class="n">proxy_target</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">value</span>
<span class="k">def</span> <span class="nf">__getattribute__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">name</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s1">'__'</span><span class="p">)):</span>
<span class="k">return</span> <span class="nb">object</span><span class="o">.</span><span class="fm">__getattribute__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
<span class="n">variable</span> <span class="o">=</span> <span class="nb">object</span><span class="o">.</span><span class="fm">__getattribute__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'value'</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="nb">hasattr</span><span class="p">(</span><span class="n">variable</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">variable</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">object</span><span class="o">.</span><span class="fm">__getattribute__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__array__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">t</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">context</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">t</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">np</span><span class="o">.</span><span class="n">asarray</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="n">t</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">np</span><span class="o">.</span><span class="n">asarray</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="s1">'O'</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__array_wrap__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">array</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">'TaggedValue('</span> <span class="o">+</span> <span class="nb">repr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">)</span> <span class="o">+</span> <span class="s1">', '</span> <span class="o">+</span> <span class="nb">repr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span> <span class="o">+</span> <span class="s1">')'</span>
<span class="k">def</span> <span class="nf">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">)</span> <span class="o">+</span> <span class="s1">' in '</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__iter__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">class</span> <span class="nc">IteratorProxy</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="nb">iter</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">iter</span> <span class="o">=</span> <span class="nb">iter</span>
<span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="o">=</span> <span class="n">unit</span>
<span class="k">def</span> <span class="nf">__next__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">iter</span><span class="p">)</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="nb">next</span> <span class="o">=</span> <span class="fm">__next__</span> <span class="c1"># for Python 2</span>
<span class="k">return</span> <span class="n">IteratorProxy</span><span class="p">(</span><span class="nb">iter</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">),</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_compressed_copy</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">mask</span><span class="p">):</span>
<span class="n">new_value</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">ma</span><span class="o">.</span><span class="n">masked_array</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="n">mask</span><span class="o">=</span><span class="n">mask</span><span class="p">)</span><span class="o">.</span><span class="n">compressed</span><span class="p">()</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">new_value</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">convert_to</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">unit</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">unit</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="n">new_value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span><span class="o">.</span><span class="n">convert_value_to</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">new_value</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_value</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">value</span>
<span class="k">def</span> <span class="nf">get_unit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">unit</span>
<span class="n">TaggedValue</span> <span class="o">=</span> <span class="n">TaggedValueMeta</span><span class="p">(</span><span class="s1">'TaggedValue'</span><span class="p">,</span> <span class="p">(</span><span class="n">_TaggedValue</span><span class="p">,</span> <span class="p">),</span> <span class="p">{})</span>
<span class="k">class</span> <span class="nc">BasicUnit</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">fullname</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">name</span>
<span class="k">if</span> <span class="n">fullname</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">fullname</span> <span class="o">=</span> <span class="n">name</span>
<span class="bp">self</span><span class="o">.</span><span class="n">fullname</span> <span class="o">=</span> <span class="n">fullname</span>
<span class="bp">self</span><span class="o">.</span><span class="n">conversions</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">'BasicUnit(</span><span class="si">%s</span><span class="s1">)'</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
<span class="k">def</span> <span class="nf">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">fullname</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__mul__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">rhs</span>
<span class="n">unit</span> <span class="o">=</span> <span class="bp">self</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'get_unit'</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">rhs</span><span class="o">.</span><span class="n">get_value</span><span class="p">()</span>
<span class="n">unit</span> <span class="o">=</span> <span class="n">rhs</span><span class="o">.</span><span class="n">get_unit</span><span class="p">()</span>
<span class="n">unit</span> <span class="o">=</span> <span class="n">unit_resolver</span><span class="p">(</span><span class="s1">'__mul__'</span><span class="p">,</span> <span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unit</span><span class="p">))</span>
<span class="k">if</span> <span class="p">(</span><span class="n">unit</span> <span class="o">==</span> <span class="bp">NotImplemented</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">unit</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__rmul__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lhs</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">*</span><span class="n">lhs</span>
<span class="k">def</span> <span class="nf">__array_wrap__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">array</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
<span class="k">return</span> <span class="n">TaggedValue</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__array__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">t</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">context</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">([</span><span class="mi">1</span><span class="p">])</span>
<span class="k">if</span> <span class="n">t</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">ret</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="n">t</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">ret</span>
<span class="k">def</span> <span class="nf">add_conversion_factor</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unit</span><span class="p">,</span> <span class="n">factor</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">convert</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">return</span> <span class="n">x</span><span class="o">*</span><span class="n">factor</span>
<span class="bp">self</span><span class="o">.</span><span class="n">conversions</span><span class="p">[</span><span class="n">unit</span><span class="p">]</span> <span class="o">=</span> <span class="n">convert</span>
<span class="k">def</span> <span class="nf">add_conversion_fn</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unit</span><span class="p">,</span> <span class="n">fn</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">conversions</span><span class="p">[</span><span class="n">unit</span><span class="p">]</span> <span class="o">=</span> <span class="n">fn</span>
<span class="k">def</span> <span class="nf">get_conversion_fn</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">conversions</span><span class="p">[</span><span class="n">unit</span><span class="p">]</span>
<span class="k">def</span> <span class="nf">convert_value_to</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">unit</span><span class="p">):</span>
<span class="n">conversion_fn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">conversions</span><span class="p">[</span><span class="n">unit</span><span class="p">]</span>
<span class="n">ret</span> <span class="o">=</span> <span class="n">conversion_fn</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">return</span> <span class="n">ret</span>
<span class="k">def</span> <span class="nf">get_unit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="k">class</span> <span class="nc">UnitResolver</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">addition_rule</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">units</span><span class="p">):</span>
<span class="k">for</span> <span class="n">unit_1</span><span class="p">,</span> <span class="n">unit_2</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">units</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span> <span class="n">units</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">unit_1</span> <span class="o">!=</span> <span class="n">unit_2</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="n">units</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">def</span> <span class="nf">multiplication_rule</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">units</span><span class="p">):</span>
<span class="n">non_null</span> <span class="o">=</span> <span class="p">[</span><span class="n">u</span> <span class="k">for</span> <span class="n">u</span> <span class="ow">in</span> <span class="n">units</span> <span class="k">if</span> <span class="n">u</span><span class="p">]</span>
<span class="k">if</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">non_null</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="n">non_null</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">op_dict</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">'__mul__'</span><span class="p">:</span> <span class="n">multiplication_rule</span><span class="p">,</span>
<span class="s1">'__rmul__'</span><span class="p">:</span> <span class="n">multiplication_rule</span><span class="p">,</span>
<span class="s1">'__add__'</span><span class="p">:</span> <span class="n">addition_rule</span><span class="p">,</span>
<span class="s1">'__radd__'</span><span class="p">:</span> <span class="n">addition_rule</span><span class="p">,</span>
<span class="s1">'__sub__'</span><span class="p">:</span> <span class="n">addition_rule</span><span class="p">,</span>
<span class="s1">'__rsub__'</span><span class="p">:</span> <span class="n">addition_rule</span><span class="p">}</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">operation</span><span class="p">,</span> <span class="n">units</span><span class="p">):</span>
<span class="k">if</span> <span class="p">(</span><span class="n">operation</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">op_dict</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">NotImplemented</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">op_dict</span><span class="p">[</span><span class="n">operation</span><span class="p">](</span><span class="bp">self</span><span class="p">,</span> <span class="n">units</span><span class="p">)</span>
<span class="n">unit_resolver</span> <span class="o">=</span> <span class="n">UnitResolver</span><span class="p">()</span>
<span class="n">cm</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'cm'</span><span class="p">,</span> <span class="s1">'centimeters'</span><span class="p">)</span>
<span class="n">inch</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'inch'</span><span class="p">,</span> <span class="s1">'inches'</span><span class="p">)</span>
<span class="n">inch</span><span class="o">.</span><span class="n">add_conversion_factor</span><span class="p">(</span><span class="n">cm</span><span class="p">,</span> <span class="mf">2.54</span><span class="p">)</span>
<span class="n">cm</span><span class="o">.</span><span class="n">add_conversion_factor</span><span class="p">(</span><span class="n">inch</span><span class="p">,</span> <span class="mi">1</span><span class="o">/</span><span class="mf">2.54</span><span class="p">)</span>
<span class="n">radians</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'rad'</span><span class="p">,</span> <span class="s1">'radians'</span><span class="p">)</span>
<span class="n">degrees</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'deg'</span><span class="p">,</span> <span class="s1">'degrees'</span><span class="p">)</span>
<span class="n">radians</span><span class="o">.</span><span class="n">add_conversion_factor</span><span class="p">(</span><span class="n">degrees</span><span class="p">,</span> <span class="mf">180.0</span><span class="o">/</span><span class="n">np</span><span class="o">.</span><span class="n">pi</span><span class="p">)</span>
<span class="n">degrees</span><span class="o">.</span><span class="n">add_conversion_factor</span><span class="p">(</span><span class="n">radians</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">pi</span><span class="o">/</span><span class="mf">180.0</span><span class="p">)</span>
<span class="n">secs</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'s'</span><span class="p">,</span> <span class="s1">'seconds'</span><span class="p">)</span>
<span class="n">hertz</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'Hz'</span><span class="p">,</span> <span class="s1">'Hertz'</span><span class="p">)</span>
<span class="n">minutes</span> <span class="o">=</span> <span class="n">BasicUnit</span><span class="p">(</span><span class="s1">'min'</span><span class="p">,</span> <span class="s1">'minutes'</span><span class="p">)</span>
<span class="n">secs</span><span class="o">.</span><span class="n">add_conversion_fn</span><span class="p">(</span><span class="n">hertz</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="mf">1.</span><span class="o">/</span><span class="n">x</span><span class="p">)</span>
<span class="n">secs</span><span class="o">.</span><span class="n">add_conversion_factor</span><span class="p">(</span><span class="n">minutes</span><span class="p">,</span> <span class="mi">1</span><span class="o">/</span><span class="mf">60.0</span><span class="p">)</span>
<span class="c1"># radians formatting</span>
<span class="k">def</span> <span class="nf">rad_fn</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">pos</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">((</span><span class="n">x</span> <span class="o">/</span> <span class="n">np</span><span class="o">.</span><span class="n">pi</span><span class="p">)</span> <span class="o">*</span> <span class="mf">2.0</span> <span class="o">+</span> <span class="mf">0.25</span><span class="p">)</span>
<span class="k">if</span> <span class="n">n</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="s1">'0'</span>
<span class="k">elif</span> <span class="n">n</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="k">return</span> <span class="sa">r</span><span class="s1">'$\pi/2$'</span>
<span class="k">elif</span> <span class="n">n</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
<span class="k">return</span> <span class="sa">r</span><span class="s1">'$\pi$'</span>
<span class="k">elif</span> <span class="n">n</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="sa">r</span><span class="s1">'$</span><span class="si">%s</span><span class="s1">\pi$'</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="o">//</span><span class="mi">2</span><span class="p">,)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="sa">r</span><span class="s1">'$</span><span class="si">%s</span><span class="s1">\pi/2$'</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,)</span>
<span class="k">class</span> <span class="nc">BasicUnitConverter</span><span class="p">(</span><span class="n">units</span><span class="o">.</span><span class="n">ConversionInterface</span><span class="p">):</span>
<span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">axisinfo</span><span class="p">(</span><span class="n">unit</span><span class="p">,</span> <span class="n">axis</span><span class="p">):</span>
<span class="s1">'return AxisInfo instance for x and unit'</span>
<span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="n">radians</span><span class="p">:</span>
<span class="k">return</span> <span class="n">units</span><span class="o">.</span><span class="n">AxisInfo</span><span class="p">(</span>
<span class="n">majloc</span><span class="o">=</span><span class="n">ticker</span><span class="o">.</span><span class="n">MultipleLocator</span><span class="p">(</span><span class="n">base</span><span class="o">=</span><span class="n">np</span><span class="o">.</span><span class="n">pi</span><span class="o">/</span><span class="mi">2</span><span class="p">),</span>
<span class="n">majfmt</span><span class="o">=</span><span class="n">ticker</span><span class="o">.</span><span class="n">FuncFormatter</span><span class="p">(</span><span class="n">rad_fn</span><span class="p">),</span>
<span class="n">label</span><span class="o">=</span><span class="n">unit</span><span class="o">.</span><span class="n">fullname</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">elif</span> <span class="n">unit</span> <span class="o">==</span> <span class="n">degrees</span><span class="p">:</span>
<span class="k">return</span> <span class="n">units</span><span class="o">.</span><span class="n">AxisInfo</span><span class="p">(</span>
<span class="n">majloc</span><span class="o">=</span><span class="n">ticker</span><span class="o">.</span><span class="n">AutoLocator</span><span class="p">(),</span>
<span class="n">majfmt</span><span class="o">=</span><span class="n">ticker</span><span class="o">.</span><span class="n">FormatStrFormatter</span><span class="p">(</span><span class="sa">r</span><span class="s1">'$</span><span class="si">%i</span><span class="s1">^\circ$'</span><span class="p">),</span>
<span class="n">label</span><span class="o">=</span><span class="n">unit</span><span class="o">.</span><span class="n">fullname</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">elif</span> <span class="n">unit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">unit</span><span class="p">,</span> <span class="s1">'fullname'</span><span class="p">):</span>
<span class="k">return</span> <span class="n">units</span><span class="o">.</span><span class="n">AxisInfo</span><span class="p">(</span><span class="n">label</span><span class="o">=</span><span class="n">unit</span><span class="o">.</span><span class="n">fullname</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">unit</span><span class="p">,</span> <span class="s1">'unit'</span><span class="p">):</span>
<span class="k">return</span> <span class="n">units</span><span class="o">.</span><span class="n">AxisInfo</span><span class="p">(</span><span class="n">label</span><span class="o">=</span><span class="n">unit</span><span class="o">.</span><span class="n">unit</span><span class="o">.</span><span class="n">fullname</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">convert</span><span class="p">(</span><span class="n">val</span><span class="p">,</span> <span class="n">unit</span><span class="p">,</span> <span class="n">axis</span><span class="p">):</span>
<span class="k">if</span> <span class="n">units</span><span class="o">.</span><span class="n">ConversionInterface</span><span class="o">.</span><span class="n">is_numlike</span><span class="p">(</span><span class="n">val</span><span class="p">):</span>
<span class="k">return</span> <span class="n">val</span>
<span class="k">if</span> <span class="n">iterable</span><span class="p">(</span><span class="n">val</span><span class="p">):</span>
<span class="k">return</span> <span class="p">[</span><span class="n">thisval</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="n">unit</span><span class="p">)</span><span class="o">.</span><span class="n">get_value</span><span class="p">()</span> <span class="k">for</span> <span class="n">thisval</span> <span class="ow">in</span> <span class="n">val</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">val</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="n">unit</span><span class="p">)</span><span class="o">.</span><span class="n">get_value</span><span class="p">()</span>
<span class="nd">@staticmethod</span>
<span class="k">def</span> <span class="nf">default_units</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">axis</span><span class="p">):</span>
<span class="s1">'return the default unit for x or None'</span>
<span class="k">if</span> <span class="n">iterable</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">for</span> <span class="n">thisx</span> <span class="ow">in</span> <span class="n">x</span><span class="p">:</span>
<span class="k">return</span> <span class="n">thisx</span><span class="o">.</span><span class="n">unit</span>
<span class="k">return</span> <span class="n">x</span><span class="o">.</span><span class="n">unit</span>
<span class="k">def</span> <span class="nf">cos</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">if</span> <span class="n">iterable</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">return</span> <span class="p">[</span><span class="n">math</span><span class="o">.</span><span class="n">cos</span><span class="p">(</span><span class="n">val</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="n">radians</span><span class="p">)</span><span class="o">.</span><span class="n">get_value</span><span class="p">())</span> <span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">x</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">math</span><span class="o">.</span><span class="n">cos</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">convert_to</span><span class="p">(</span><span class="n">radians</span><span class="p">)</span><span class="o">.</span><span class="n">get_value</span><span class="p">())</span>
<span class="n">basicConverter</span> <span class="o">=</span> <span class="n">BasicUnitConverter</span><span class="p">()</span>
<span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">[</span><span class="n">BasicUnit</span><span class="p">]</span> <span class="o">=</span> <span class="n">basicConverter</span>
<span class="n">units</span><span class="o">.</span><span class="n">registry</span><span class="p">[</span><span class="n">TaggedValue</span><span class="p">]</span> <span class="o">=</span> <span class="n">basicConverter</span>
</pre></div>
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<p>Keywords: python, matplotlib, pylab, example, codex (see <a class="reference internal" href="../../faq/howto_faq.html#how-to-search-examples"><span class="std std-ref">Search examples</span></a>)</p>
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