Lib/types.py

   1 """Define names for all type symbols known in the standard interpreter.
   2
   3 Types that are part of optional modules (e.g. array) are not listed.
   4 """
   5 from __future__ import generators
   6
   7 import sys
   8
   9 NoneType = type(None)
  10 TypeType = type
  11 ObjectType = object
  12
  13 IntType = int
  14 LongType = long
  15 FloatType = float
  16 try:
  17     ComplexType = complex
  18 except NameError:
  19     pass
  20
  21 StringType = str
  22 UnicodeType = unicode
  23 BufferType = type(buffer(''))
  24
  25 TupleType = tuple
  26 ListType = list
  27 DictType = DictionaryType = dictionary
  28
  29 def _f(): pass
  30 FunctionType = type(_f)
  31 LambdaType = type(lambda: None)         # Same as FunctionType
  32 try:
  33     CodeType = type(_f.func_code)
  34 except RuntimeError:
  35     # Execution in restricted environment
  36     pass
  37
  38 def g():
  39     yield 1
  40 GeneratorType = type(g())
  41 del g
  42
  43 class _C:
  44     def _m(self): pass
  45 ClassType = type(_C)
  46 UnboundMethodType = type(_C._m)         # Same as MethodType
  47 _x = _C()
  48 InstanceType = type(_x)
  49 MethodType = type(_x._m)
  50
  51 BuiltinFunctionType = type(len)
  52 BuiltinMethodType = type([].append)     # Same as BuiltinFunctionType
  53
  54 ModuleType = type(sys)
  55
  56 try:
  57     FileType = type(sys.__stdin__)
  58 except AttributeError:
  59     # Not available in restricted mode
  60     pass
  61 XRangeType = type(xrange(0))
  62
  63 try:
  64     raise TypeError
  65 except TypeError:
  66     try:
  67         tb = sys.exc_info()[2]
  68         TracebackType = type(tb)
  69         FrameType = type(tb.tb_frame)
  70     except AttributeError:
  71         # In the restricted environment, exc_info returns (None, None,
  72         # None) Then, tb.tb_frame gives an attribute error
  73         pass
  74     tb = None; del tb
  75
  76 SliceType = type(slice(0))
  77 EllipsisType = type(Ellipsis)
  78
  79 DictIterType = type(iter({}))
  80 SequenceIterType = type(iter([]))
  81 FunctionIterType = type(iter(lambda: 0, 0))
  82 DictProxyType = type(TypeType.__dict__)
  83
  84 del sys, _f, _C, _x                     # Not for export