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"""
A resurrection of some old functions from Python 2 for use in Python 3. These
should be used sparingly, to help with porting efforts, since code using them
is no longer standard Python 3 code.
This module provides the following:
1. Implementations of these builtin functions which have no equivalent on Py3:
- apply
- chr
- cmp
- execfile
2. Aliases:
- intern <- sys.intern
- raw_input <- input
- reduce <- functools.reduce
- reload <- imp.reload
- unichr <- chr
- unicode <- str
- xrange <- range
3. List-producing versions of the corresponding Python 3 iterator-producing functions:
- filter
- map
- range
- zip
4. Forward-ported Py2 types:
- basestring
- dict
- str
- long
- unicode
"""
from future.utils import PY3
from past.builtins.noniterators import (filter, map, range, reduce, zip)
# from past.builtins.misc import (ascii, hex, input, oct, open)
if PY3:
from past.types import (basestring,
olddict as dict,
oldstr as str,
long,
unicode)
else:
from __builtin__ import (basestring, dict, str, long, unicode)
from past.builtins.misc import (apply, chr, cmp, execfile, intern, oct,
raw_input, reload, unichr, unicode, xrange)
from past import utils
if utils.PY3:
# We only import names that shadow the builtins on Py3. No other namespace
# pollution on Py3.
# Only shadow builtins on Py3; no new names
__all__ = ['filter', 'map', 'range', 'reduce', 'zip',
'basestring', 'dict', 'str', 'long', 'unicode',
'apply', 'chr', 'cmp', 'execfile', 'intern', 'raw_input',
'reload', 'unichr', 'xrange'
]
else:
# No namespace pollution on Py2
__all__ = []
|
