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Utility functions from 2to3, 3to2 and python-modernize (and some home-grown
ones).

Licences:
2to3: PSF License v2
3to2: Apache Software License (from 3to2/setup.py)
python-modernize licence: BSD (from python-modernize/LICENSE)
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    Examples:
    >>> canonical_fix_name('fix_wrap_text_literals')
    'libfuturize.fixes.fix_wrap_text_literals'
    >>> canonical_fix_name('wrap_text_literals')
    'libfuturize.fixes.fix_wrap_text_literals'
    >>> canonical_fix_name('wrap_te')
    ValueError("unknown fixer name")
    >>> canonical_fix_name('wrap')
    ValueError("ambiguous fixer name")
    s.fix_tfix_isfix_{0}isOAmbiguous fixer name. Choose a fully qualified module name instead from these:
s
css|]}d|VqdS(s  N((t.0tmyf((s:/usr/lib/python2.7/site-packages/libfuturize/fixer_util.pys	<genexpr>-sis1Unknown fixer. Use --list-fixes or -l for a list.N(t
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    Accepts/turns: (Name, Name, ..., Name, Name)
    Returns/into: (Name, Comma, Name, Comma, ..., Name, Comma, Name)
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    Iff a node is in a suite, then it has indentation.
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    Dirty little trick to get the difference between each indentation level
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    tabs and spaces mixed won't get this far, so those are synonymous.)
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    Accepts a package (Name node), name to import it as (string), and
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    This seems to work
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    top if it was not imported (but below any __future__ imports) and below any
    comments such as shebang lines).

    Based on lib2to3.fixer_util.touch_import()

    Calling this multiple times adds the imports in reverse order.

    Also adds "standard_library.install_aliases()" after "from future import
    standard_library".  This should probably be factored into another function.
    Ntabsolute_importtdivisiontprint_functiontunicode_literalst
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    Comments are prefixes for Leaf nodes. Returns whether the given node has a
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        #!/usr/bin/env python
        #!/usr/bin/python3
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    Comments are prefixes for Leaf nodes. Returns whether the given node has a
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        # -*- coding: <encoding name> -*-
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    Example:
    >>> wrap_in_fn_call("oldstr", (arg,))
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    >>> wrap_in_fn_call("olddiv", (arg1, arg2))
    olddiv(arg1, arg2)

    >>> wrap_in_fn_call("olddiv", [arg1, comma, arg2, comma, arg3])
    olddiv(arg1, arg2, arg3)
    iiR(RRFRRR(tfn_nametargsRtexpr1texpr2tnewargs((s:/usr/lib/python2.7/site-packages/libfuturize/fixer_util.pytwrap_in_fn_call�s(5t__doc__tlib2to3.fixer_utilRRRRRRtlib2to3.pytreeRRtlib2to3.pygramRR
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