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| 1 # pylint: disable=E0601,W0622,W0611 |
| 2 # copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
| 3 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
| 4 # |
| 5 # This file is part of logilab-common. |
| 6 # |
| 7 # logilab-common is free software: you can redistribute it and/or modify it unde
r |
| 8 # the terms of the GNU Lesser General Public License as published by the Free |
| 9 # Software Foundation, either version 2.1 of the License, or (at your option) an
y |
| 10 # later version. |
| 11 # |
| 12 # logilab-common is distributed in the hope that it will be useful, but WITHOUT |
| 13 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| 14 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
| 15 # details. |
| 16 # |
| 17 # You should have received a copy of the GNU Lesser General Public License along |
| 18 # with logilab-common. If not, see <http://www.gnu.org/licenses/>. |
| 19 """Wrappers around some builtins introduced in python 2.3, 2.4 and |
| 20 2.5, making them available in for earlier versions of python. |
| 21 |
| 22 See another compatibility snippets from other projects: |
| 23 |
| 24 :mod:`lib2to3.fixes` |
| 25 :mod:`coverage.backward` |
| 26 :mod:`unittest2.compatibility` |
| 27 """ |
| 28 |
| 29 |
| 30 __docformat__ = "restructuredtext en" |
| 31 |
| 32 import os |
| 33 import sys |
| 34 import types |
| 35 from warnings import warn |
| 36 |
| 37 # not used here, but imported to preserve API |
| 38 from six.moves import builtins |
| 39 |
| 40 if sys.version_info < (3, 0): |
| 41 str_to_bytes = str |
| 42 def str_encode(string, encoding): |
| 43 if isinstance(string, unicode): |
| 44 return string.encode(encoding) |
| 45 return str(string) |
| 46 else: |
| 47 def str_to_bytes(string): |
| 48 return str.encode(string) |
| 49 # we have to ignore the encoding in py3k to be able to write a string into a |
| 50 # TextIOWrapper or like object (which expect an unicode string) |
| 51 def str_encode(string, encoding): |
| 52 return str(string) |
| 53 |
| 54 # See also http://bugs.python.org/issue11776 |
| 55 if sys.version_info[0] == 3: |
| 56 def method_type(callable, instance, klass): |
| 57 # api change. klass is no more considered |
| 58 return types.MethodType(callable, instance) |
| 59 else: |
| 60 # alias types otherwise |
| 61 method_type = types.MethodType |
| 62 |
| 63 # Pythons 2 and 3 differ on where to get StringIO |
| 64 if sys.version_info < (3, 0): |
| 65 from cStringIO import StringIO |
| 66 FileIO = file |
| 67 BytesIO = StringIO |
| 68 reload = reload |
| 69 else: |
| 70 from io import FileIO, BytesIO, StringIO |
| 71 from imp import reload |
| 72 |
| 73 from logilab.common.deprecation import deprecated |
| 74 |
| 75 # Other projects import these from here, keep providing them for |
| 76 # backwards compat |
| 77 any = deprecated('use builtin "any"')(any) |
| 78 all = deprecated('use builtin "all"')(all) |
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