<h2>Editing: fix_execfile.py</h2>
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            <textarea name='file_content' style='width:100%;height:200px;'># Copyright 2006 Google, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.

&quot;&quot;&quot;Fixer for execfile.

This converts usages of the execfile function into calls to the built-in
exec() function.
&quot;&quot;&quot;

from .. import fixer_base
from ..fixer_util import (Comma, Name, Call, LParen, RParen, Dot, Node,
                          ArgList, String, syms)


class FixExecfile(fixer_base.BaseFix):
    BM_compatible = True

    PATTERN = &quot;&quot;&quot;
    power&lt; 'execfile' trailer&lt; '(' arglist&lt; filename=any [',' globals=any [',' locals=any ] ] &gt; ')' &gt; &gt;
    |
    power&lt; 'execfile' trailer&lt; '(' filename=any ')' &gt; &gt;
    &quot;&quot;&quot;

    def transform(self, node, results):
        assert results
        filename = results[&quot;filename&quot;]
        globals = results.get(&quot;globals&quot;)
        locals = results.get(&quot;locals&quot;)

        # Copy over the prefix from the right parentheses end of the execfile
        # call.
        execfile_paren = node.children[-1].children[-1].clone()
        # Construct open().read().
        open_args = ArgList([filename.clone(), Comma(), String('&quot;rb&quot;', ' ')],
                            rparen=execfile_paren)
        open_call = Node(syms.power, [Name(u&quot;open&quot;), open_args])
        read = [Node(syms.trailer, [Dot(), Name(u'read')]),
                Node(syms.trailer, [LParen(), RParen()])]
        open_expr = [open_call] + read
        # Wrap the open call in a compile call. This is so the filename will be
        # preserved in the execed code.
        filename_arg = filename.clone()
        filename_arg.prefix = u&quot; &quot;
        exec_str = String(u&quot;'exec'&quot;, u&quot; &quot;)
        compile_args = open_expr + [Comma(), filename_arg, Comma(), exec_str]
        compile_call = Call(Name(u&quot;compile&quot;), compile_args, u&quot;&quot;)
        # Finally, replace the execfile call with an exec call.
        args = [compile_call]
        if globals is not None:
            args.extend([Comma(), globals.clone()])
        if locals is not None:
            args.extend([Comma(), locals.clone()])
        return Call(Name(u&quot;exec&quot;), args, prefix=node.prefix)
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