File: //opt/alt/python27/lib/python2.7/site-packages/future/standard_library/__init__.pyo
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Python 3 reorganized the standard library (PEP 3108). This module exposes
several standard library modules to Python 2 under their new Python 3
names.
It is designed to be used as follows::
from future import standard_library
standard_library.install_aliases()
And then these normal Py3 imports work on both Py3 and Py2::
import builtins
import copyreg
import queue
import reprlib
import socketserver
import winreg # on Windows only
import test.support
import html, html.parser, html.entites
import http, http.client, http.server
import http.cookies, http.cookiejar
import urllib.parse, urllib.request, urllib.response, urllib.error, urllib.robotparser
import xmlrpc.client, xmlrpc.server
import _thread
import _dummy_thread
import _markupbase
from itertools import filterfalse, zip_longest
from sys import intern
from collections import UserDict, UserList, UserString
from collections import OrderedDict, Counter, ChainMap # even on Py2.6
from subprocess import getoutput, getstatusoutput
from subprocess import check_output # even on Py2.6
(The renamed modules and functions are still available under their old
names on Python 2.)
This is a cleaner alternative to this idiom (see
http://docs.pythonsprints.com/python3_porting/py-porting.html)::
try:
import queue
except ImportError:
import Queue as queue
Limitations
-----------
We don't currently support these modules, but would like to::
import dbm
import dbm.dumb
import dbm.gnu
import collections.abc # on Py33
import pickle # should (optionally) bring in cPickle on Python 2
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A class for import hooks mapping Py3 module names etc. to the Py2 equivalents.
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Pass in a dictionary-like object mapping from old names to new
names. E.g. {'ConfigParser': 'configparser', 'cPickle': 'pickle'}
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Finds and loads it. But if there's a . in the name, handles it
properly.
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Acts as a context manager. Saves the state of sys.modules and restores it
after the 'with' block.
Use like this:
>>> from future import standard_library
>>> with standard_library.hooks():
... import http.client
>>> import requests
For this to work, http.client will be scrubbed from sys.modules after the
'with' block. That way the modules imported in the 'with' block will
continue to be accessible in the current namespace but not from any
imported modules (like requests).
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Tries to infer whether the module m is from the Python 2 standard library.
This may not be reliable on all systems.
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Removes any Python 2 standard library modules from ``sys.modules`` that
would interfere with Py3-style imports using import hooks. Examples are
modules with the same names (like urllib or email).
(Note that currently import hooks are disabled for modules like these
with ambiguous names anyway ...)
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>>> import http.client
>>> # ...
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>>> import requests # incompatible with ``future``'s standard library hooks
If the hooks were disabled before the context, they are not installed when
the context is left.
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Add any previously scrubbed modules back to the sys.modules cache,
but only if it's safe to do so.
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Monkey-patches the standard library in Py2.6/7 to provide
aliases for better Py3 compatibility.
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This function installs the future.standard_library import hook into
sys.meta_path.
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Deprecated. Use install_hooks() instead. This will be removed by
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Deprecated. Use remove_hooks() instead. This will be removed by
``future`` v1.0.
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Pass a (potentially dotted) module name of a Python 3 standard library
module. This function imports the module compatibly on Py2 and Py3 and
returns the top-level module.
Example use:
>>> http = import_('http.client')
>>> http = import_('http.server')
>>> urllib = import_('urllib.request')
Then:
>>> conn = http.client.HTTPConnection(...)
>>> response = urllib.request.urlopen('http://mywebsite.com')
>>> # etc.
Use as follows:
>>> package_name = import_(module_name)
On Py3, equivalent to this:
>>> import module_name
On Py2, equivalent to this if backport=False:
>>> from future.moves import module_name
or to this if backport=True:
>>> from future.backports import module_name
except that it also handles dotted module names such as ``http.client``
The effect then is like this:
>>> from future.backports import module
>>> from future.backports.module import submodule
>>> module.submodule = submodule
Note that this would be a SyntaxError in Python:
>>> from future.backports import http.client
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Example use:
>>> HTTPConnection = from_import('http.client', 'HTTPConnection')
>>> HTTPServer = from_import('http.server', 'HTTPServer')
>>> urlopen, urlparse = from_import('urllib.request', 'urlopen', 'urlparse')
Equivalent to this on Py3:
>>> from module_name import symbol_names[0], symbol_names[1], ...
and this on Py2:
>>> from future.moves.module_name import symbol_names[0], ...
or:
>>> from future.backports.module_name import symbol_names[0], ...
except that it also handles dotted module names such as ``http.client``.
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A context-manager that prevents standard library modules like configparser
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(This was need prior to v0.16.0 because the presence of a configparser
folder would otherwise have prevented setuptools from running on Py3. Maybe
it's not needed any more?)
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