Mercurial > cpython-lru_cache-weakref

annotate Lib/types.py @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents a13a4393f45c
children fa0ac845929b
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6f4146846337 The third and final doc-string sweep by Ka-Ping Yee.
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1 """Define names for all type symbols known in the standard interpreter.
6f4146846337 The third and final doc-string sweep by Ka-Ping Yee.
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2
6f4146846337 The third and final doc-string sweep by Ka-Ping Yee.
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3 Types that are part of optional modules (e.g. array) are not listed.
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4 """
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59446d0f8341 Preliminary support for "from __future__ import generators" to enable
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5 from __future__ import generators
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6
0a60460e99f0 Two new generally useful modules: types defines names for all built-in types,
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7 import sys
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8
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9 # Iterators in Python aren't a matter of type but of protocol. A large
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10 # and changing number of builtin types implement *some* flavor of
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11 # iterator. Don't check the type! Use hasattr to check for both
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12 # "__iter__" and "next" attributes instead.
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13
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14 NoneType = type(None)
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15 TypeType = type
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16 ObjectType = object
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17
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parents: 18933
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18 IntType = int
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19 LongType = long
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20 FloatType = float
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21 try:
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22 ComplexType = complex
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23 except NameError:
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24 pass
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25
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26 StringType = str
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27 try:
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28 UnicodeType = unicode
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29 StringTypes = (StringType, UnicodeType)
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30 except NameError:
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31 StringTypes = (StringType,)
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32
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33 BufferType = type(buffer(''))
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34
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35 TupleType = tuple
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36 ListType = list
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37 DictType = DictionaryType = dict
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38
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39 def _f(): pass
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40 FunctionType = type(_f)
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41 LambdaType = type(lambda: None) # Same as FunctionType
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42 try:
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parents: 4403
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43 CodeType = type(_f.func_code)
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cb346baedad6 Only catch the errors that can actually occur, as reported in bug #411881.
Martin v. Löwis <martin@v.loewis.de>
parents: 19071
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44 except RuntimeError:
cb346baedad6 Only catch the errors that can actually occur, as reported in bug #411881.
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parents: 19071
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45 # Execution in restricted environment
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46 pass
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47
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48 def g():
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49 yield 1
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50 GeneratorType = type(g())
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51 del g
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52
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53 class _C:
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54 def _m(self): pass
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55 ClassType = type(_C)
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56 UnboundMethodType = type(_C._m) # Same as MethodType
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57 _x = _C()
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58 InstanceType = type(_x)
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59 MethodType = type(_x._m)
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60
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61 BuiltinFunctionType = type(len)
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62 BuiltinMethodType = type([].append) # Same as BuiltinFunctionType
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63
0a60460e99f0 Two new generally useful modules: types defines names for all built-in types,
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64 ModuleType = type(sys)
19894
51cc82605d32 SF bug [#460467] file objects should be subclassable.
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parents: 19343
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65 FileType = file
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66 XRangeType = type(xrange(0))
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67
0a60460e99f0 Two new generally useful modules: types defines names for all built-in types,
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68 try:
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69 raise TypeError
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70 except TypeError:
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parents: 4403
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71 try:
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parents: 6347
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72 tb = sys.exc_info()[2]
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73 TracebackType = type(tb)
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parents: 6347
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74 FrameType = type(tb.tb_frame)
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Martin v. Löwis <martin@v.loewis.de>
parents: 19071
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75 except AttributeError:
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parents: 19071
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76 # In the restricted environment, exc_info returns (None, None,
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parents: 19071
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77 # None) Then, tb.tb_frame gives an attribute error
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78 pass
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79 tb = None; del tb
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80
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81 SliceType = type(slice(0))
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82 EllipsisType = type(Ellipsis)
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83
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84 DictProxyType = type(TypeType.__dict__)
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85
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8ec95ce78735 Don't export generators future info
Jeremy Hylton <jeremy@alum.mit.edu>
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86 del sys, _f, _C, _x, generators # Not for export