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types.py

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"""Define names for all type symbols known in the standard interpreter.

Types that are part of optional modules (e.g. array) are not listed.

"""

import sys

# Iterators in Python aren't a matter of type but of protocol. A large

# and changing number of builtin types implement *some* flavor of

# iterator. Don't check the type! Use hasattr to check for both

# "__iter__" and "next" attributes instead.

NoneType = type(None)

TypeType = type

ObjectType = object

IntType = int

LongType = long

FloatType = float

BooleanType = bool

try:

ComplexType = complex

except NameError:

pass

StringType = str

# StringTypes is already outdated. Instead of writing "type(x) in

# types.StringTypes", you should use "isinstance(x, basestring)". But

# we keep around for compatibility with Python 2.2.

try:

UnicodeType = unicode

StringTypes = (StringType, UnicodeType)

except NameError:

StringTypes = (StringType,)

BufferType = buffer

TupleType = tuple

ListType = list

DictType = DictionaryType = dict

def _f(): pass

FunctionType = type(_f)

LambdaType = type(lambda: None) # Same as FunctionType

CodeType = type(_f.func_code)

def _g():

yield 1

GeneratorType = type(_g())

class _C:

def _m(self): pass

ClassType = type(_C)

UnboundMethodType = type(_C._m) # Same as MethodType

_x = _C()

InstanceType = type(_x)

MethodType = type(_x._m)

BuiltinFunctionType = type(len)

BuiltinMethodType = type([].append) # Same as BuiltinFunctionType

ModuleType = type(sys)

FileType = file

XRangeType = xrange

try:

raise TypeError

except TypeError:

tb = sys.exc_info()[2]

TracebackType = type(tb)

FrameType = type(tb.tb_frame)

del tb

SliceType = slice

EllipsisType = type(Ellipsis)

DictProxyType = type(TypeType.__dict__)

NotImplementedType = type(NotImplemented)

# For Jython, the following two types are identical

GetSetDescriptorType = type(FunctionType.func_code)

MemberDescriptorType = type(FunctionType.func_globals)

del sys, _f, _g, _C, _x # Not for export