cpython/Lib/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
NoneType = type(None)
TypeType = type(NoneType)
IntType = type(0)
LongType = type(0L)
FloatType = type(0.0)
StringType = type('')
TupleType = type(())
ListType = type([])
DictionaryType = type({})
def func(): pass
FunctionType = type(func)
class C:
def meth(self): pass
ClassType = type(C)
UnboundMethodType = type(C.meth) # Same as MethodType
x = C()
InstanceType = type(x)
MethodType = type(x.meth)
BuiltinFunctionType = type(len) # Also used for built-in methods
ModuleType = type(sys)
FileType = type(sys.stdin)
XRangeType = type(xrange(0))
try:
raise TypeError
except TypeError:
TracebackType = type(sys.exc_traceback)
FrameType = type(sys.exc_traceback.tb_frame)
del sys, func, C, x # These are not for export