pylint: upgrade to 1.3.1

third_party/logilab/common/compat.py

 # pylint: disable=E0601,W0622,W0611
 # copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of logilab-common.
 #
 # logilab-common is free software: you can redistribute it and/or modify it under
 # the terms of the GNU Lesser General Public License as published by the Free
 # Software Foundation, either version 2.1 of the License, or (at your option) any
 # later version.
 #
 # logilab-common is distributed in the hope that it will be useful, but WITHOUT
 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 # details.
 #
 # You should have received a copy of the GNU Lesser General Public License along
 # with logilab-common.  If not, see <http://www.gnu.org/licenses/>.
 """Wrappers around some builtins introduced in python 2.3, 2.4 and
 2.5, making them available in for earlier versions of python.
 
 See another compatibility snippets from other projects:
 
     :mod:`lib2to3.fixes`
     :mod:`coverage.backward`
     :mod:`unittest2.compatibility`
 """
 
-from __future__ import generators
 
 __docformat__ = "restructuredtext en"
 
 import os
 import sys
 import types
 from warnings import warn
 
-import __builtin__ as builtins # 2to3 will tranform '__builtin__' to 'builtins'
+# not used here, but imported to preserve API
+from six.moves import builtins
 
 if sys.version_info < (3, 0):
     str_to_bytes = str
     def str_encode(string, encoding):
         if isinstance(string, unicode):
             return string.encode(encoding)
         return str(string)
 else:
     def str_to_bytes(string):
         return str.encode(string)
     # we have to ignore the encoding in py3k to be able to write a string into a
     # TextIOWrapper or like object (which expect an unicode string)
     def str_encode(string, encoding):
         return str(string)
 
-# XXX callable built-in seems back in all python versions
-try:
-    callable = builtins.callable
-except AttributeError:
-    from collections import Callable
-    def callable(something):
-        return isinstance(something, Callable)
-    del Callable
-
 # See also http://bugs.python.org/issue11776
 if sys.version_info[0] == 3:
     def method_type(callable, instance, klass):
         # api change. klass is no more considered
         return types.MethodType(callable, instance)
 else:
     # alias types otherwise
     method_type = types.MethodType
 
-if sys.version_info < (3, 0):
-    raw_input = raw_input
-else:
-    raw_input = input
-
 # Pythons 2 and 3 differ on where to get StringIO
 if sys.version_info < (3, 0):
     from cStringIO import StringIO
     FileIO = file
     BytesIO = StringIO
     reload = reload
 else:
     from io import FileIO, BytesIO, StringIO
     from imp import reload
 
-# Where do pickles come from?
-try:
-    import cPickle as pickle
-except ImportError:
-    import pickle
-
 from logilab.common.deprecation import deprecated
 
-from itertools import izip, chain, imap
-if sys.version_info < (3, 0):# 2to3 will remove the imports
-    izip = deprecated('izip exists in itertools since py2.3')(izip)
-    imap = deprecated('imap exists in itertools since py2.3')(imap)
-chain = deprecated('chain exists in itertools since py2.3')(chain)
-
-sum = deprecated('sum exists in builtins since py2.3')(sum)
-enumerate = deprecated('enumerate exists in builtins since py2.3')(enumerate)
-frozenset = deprecated('frozenset exists in builtins since py2.4')(frozenset)
-reversed = deprecated('reversed exists in builtins since py2.4')(reversed)
-sorted = deprecated('sorted exists in builtins since py2.4')(sorted)
-max = deprecated('max exists in builtins since py2.4')(max)
-
-
-# Python2.5 builtins
-try:
-    any = any
-    all = all
-except NameError:
-    def any(iterable):
-        """any(iterable) -> bool
-
-        Return True if bool(x) is True for any x in the iterable.
-        """
-        for elt in iterable:
-            if elt:
-                return True
-        return False
-
-    def all(iterable):
-        """all(iterable) -> bool
-
-        Return True if bool(x) is True for all values x in the iterable.
-        """
-        for elt in iterable:
-            if not elt:
-                return False
-        return True
-
-
-# Python2.5 subprocess added functions and exceptions
-try:
-    from subprocess import Popen
-except ImportError:
-    # gae or python < 2.3
-
-    class CalledProcessError(Exception):
-        """This exception is raised when a process run by check_call() returns
-        a non-zero exit status.  The exit status will be stored in the
-        returncode attribute."""
-        def __init__(self, returncode, cmd):
-            self.returncode = returncode
-            self.cmd = cmd
-        def __str__(self):
-            return "Command '%s' returned non-zero exit status %d" % (self.cmd,
-    self.returncode)
-
-    def call(*popenargs, **kwargs):
-        """Run command with arguments.  Wait for command to complete, then
-        return the returncode attribute.
-
-        The arguments are the same as for the Popen constructor.  Example:
-
-        retcode = call(["ls", "-l"])
-        """
-        # workaround: subprocess.Popen(cmd, stdout=sys.stdout) fails
-        # see http://bugs.python.org/issue1531862
-        if "stdout" in kwargs:
-            fileno = kwargs.get("stdout").fileno()
-            del kwargs['stdout']
-            return Popen(stdout=os.dup(fileno), *popenargs, **kwargs).wait()
-        return Popen(*popenargs, **kwargs).wait()
-
-    def check_call(*popenargs, **kwargs):
-        """Run command with arguments.  Wait for command to complete.  If
-        the exit code was zero then return, otherwise raise
-        CalledProcessError.  The CalledProcessError object will have the
-        return code in the returncode attribute.
-
-        The arguments are the same as for the Popen constructor.  Example:
-
-        check_call(["ls", "-l"])
-        """
-        retcode = call(*popenargs, **kwargs)
-        cmd = kwargs.get("args")
-        if cmd is None:
-            cmd = popenargs[0]
-        if retcode:
-            raise CalledProcessError(retcode, cmd)
-        return retcode
-
-try:
-    from os.path import relpath
-except ImportError: # python < 2.6
-    from os.path import curdir, abspath, sep, commonprefix, pardir, join
-    def relpath(path, start=curdir):
-        """Return a relative version of a path"""
-
-        if not path:
-            raise ValueError("no path specified")
-
-        start_list = abspath(start).split(sep)
-        path_list = abspath(path).split(sep)
-
-        # Work out how much of the filepath is shared by start and path.
-        i = len(commonprefix([start_list, path_list]))
-
-        rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
-        if not rel_list:
-            return curdir
-        return join(*rel_list)
-
-
-# XXX don't know why tests don't pass if I don't do that :
-_real_set, set = set, deprecated('set exists in builtins since py2.4')(set)
-if (2, 5) <= sys.version_info[:2]:
-    InheritableSet = _real_set
-else:
-    class InheritableSet(_real_set):
-        """hacked resolving inheritancy issue from old style class in 2.4"""
-        def __new__(cls, *args, **kwargs):
-            if args:
-                new_args = (args[0], )
-            else:
-                new_args = ()
-            obj = _real_set.__new__(cls, *new_args)
-            obj.__init__(*args, **kwargs)
-            return obj
-
-# XXX shouldn't we remove this and just let 2to3 do his job ?
-# range or xrange?
-try:
-    range = xrange
-except NameError:
-    range = range
-
-# ConfigParser was renamed to the more-standard configparser
-try:
-    import configparser
-except ImportError:
-    import ConfigParser as configparser
-
-try:
-    import json
-except ImportError:
-    try:
-        import simplejson as json
-    except ImportError:
-        json = None
+# Other projects import these from here, keep providing them for
+# backwards compat
+any = deprecated('use builtin "any"')(any)
+all = deprecated('use builtin "all"')(all)