Replace older formatting methods with f-strings (Akuli#39)

tusharkhatriofficial · web-flow · commit 22725a44d7c8 · 2022-09-18T23:20:21.000+03:00
diff --git a/README.md b/README.md
@@ -12,7 +12,7 @@ or very little programming experience. If you have programmed a lot in
 the past using some other language you may want to read [the official
 tutorial](https://docs.python.org/3/tutorial/) instead.
 
-You can use Python 3.5 or any newer Python with this tutorial. **Don't
+You can use Python 3.6 or any newer Python with this tutorial. **Don't
 use Python 2 because it's no longer supported.**
 
 ## List of contents
diff --git a/basics/handy-stuff-strings.md b/basics/handy-stuff-strings.md
@@ -241,82 +241,17 @@ Instead it's recommended to use string formatting. It means putting
 other things in the middle of a string.
 
 Python has multiple ways to format strings. One is not necessarily
-better than others, they are just different. Here's a few ways to solve
-our problem:
+better than others; they each have their own advantages and disadvantages.
+In this tutorial, we will focus on f-strings, which is the most common and usually the easiest way.
 
-- `.format()`-formatting, also known as new-style formatting. This
-    formatting style has a lot of features, but it's a little bit more
-    typing than `%s`-formatting.
-
-    ```python
-    >>> "Hello {}.".format(name)
-    'Hello Akuli.'
-    >>> "My name is {} and I'm on the {} channel on {}.".format(name, channel, network)
-    "My name is Akuli and I'm on the ##learnpython channel on freenode."
-    >>>
-    ```
-
-- `%s`-formatting, also known as old-style formatting. This has less
-    features than `.format()`-formatting, but `'Hello %s.' % name` is
-    shorter and faster to type than `'Hello {}.'.format(name)`. I like
-    to use `%s` formatting for simple things and `.format` when I need
-    more powerful features.
-
-    ```python
-    >>> "Hello %s." % name
-    'Hello Akuli.'
-    >>> "My name is %s and I'm on the %s channel on %s." % (name, channel, network)
-    "My name is Akuli and I'm on the ##learnpython channel on freenode."
-    >>>
-    ```
-
-    In the second example we had `(name, channel, network)` on the right
-    side of the `%` sign. It was a tuple, and we'll talk more about them
-    [later](lists-and-tuples.md#tuples).
-
-    If we have a variable that may be a tuple we need to wrap it in another
-    tuple when formatting:
-
-    ```python
-    >>> thestuff = (1, 2, 3)
-    >>> "we have %s" % thestuff
-    Traceback (most recent call last):
-      File "<stdin>", line 1, in <module>
-    TypeError: not all arguments converted during string formatting
-    >>> "we have %s and %s" % ("hello", thestuff)
-    'we have hello and (1, 2, 3)'
-    >>> "we have %s" % (thestuff,)
-    'we have (1, 2, 3)'
-    >>>
-    ```
-
-    Here `(thestuff,)` was a tuple that contained nothing but `thestuff`.
-
-- f-strings are even less typing, but new in Python 3.6. **Use this only if
-    you know that nobody will need to run your code on Python versions older
-    than 3.6.** Here the f is short for "format", and the content of the
-    string is same as it would be with `.format()` but we can use variables
-    directly.
-
-    ```python
-    >>> f"My name is {name} and I'm on the {channel} channel on {network}."
-    "My name is Akuli and I'm on the ##learnpython channel on freenode."
-    >>>
-    ```
-
-All of these formatting styles have many other features also:
+`f` in f-strings stands for "format", f-strings are string literals that have an `f` at the beginning and curly braces containing expressions that will be replaced with their values at runtime. To create f-strings, you have to add an `f` or an `F` before the opening quotes of a string.
 
 ```python
->>> 'Three zeros and number one: {:04d}'.format(1)
-'Three zeros and number one: 0001'
->>> 'Three zeros and number one: %04d' % 1
-'Three zeros and number one: 0001'
+>>> f"My name is {name} and I'm on the {channel} channel on {network}."
+"My name is Akuli and I'm on the ##learnpython channel on freenode."
 >>>
 ```
 
-If you need to know more about formatting I recommend reading
-[this](https://pyformat.info/).
-
 ## Other things
 
 We can use `in` and `not in` to check if a string contains another
