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opt / alt / python27 / lib64 / python2.7 / lib2to3 / pgen2 /

ðŸ“ ..
ðŸ“„ __init__.py(143 B)
ðŸ“„ __init__.pyc(187 B)
ðŸ“„ __init__.pyo(187 B)
ðŸ“„ conv.py(9.4 KB)
ðŸ“„ conv.pyc(8.07 KB)
ðŸ“„ conv.pyo(6.95 KB)
ðŸ“„ driver.py(5.9 KB)
ðŸ“„ driver.pyc(6.48 KB)
ðŸ“„ driver.pyo(6.42 KB)
ðŸ“„ grammar.py(6.44 KB)
ðŸ“„ grammar.pyc(7.64 KB)
ðŸ“„ grammar.pyo(7.64 KB)
ðŸ“„ literals.py(1.58 KB)
ðŸ“„ literals.pyc(2.02 KB)
ðŸ“„ literals.pyo(1.79 KB)
ðŸ“„ parse.py(7.86 KB)
ðŸ“„ parse.pyc(7.22 KB)
ðŸ“„ parse.pyo(7.18 KB)
ðŸ“„ pgen.py(13.5 KB)
ðŸ“„ pgen.pyc(12.36 KB)
ðŸ“„ pgen.pyo(11.76 KB)
ðŸ“„ token.py(1.24 KB)
ðŸ“„ token.pyc(2.3 KB)
ðŸ“„ token.pyo(2.3 KB)
ðŸ“„ tokenize.py(18.79 KB)
ðŸ“„ tokenize.pyc(16.83 KB)
ðŸ“„ tokenize.pyo(16.74 KB)

Editing: literals.py

# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
# Licensed to PSF under a Contributor Agreement.

"""Safely evaluate Python string literals without using eval()."""

import re

simple_escapes = {"a": "\a",
                  "b": "\b",
                  "f": "\f",
                  "n": "\n",
                  "r": "\r",
                  "t": "\t",
                  "v": "\v",
                  "'": "'",
                  '"': '"',
                  "\\": "\\"}

def escape(m):
    all, tail = m.group(0, 1)
    assert all.startswith("\\")
    esc = simple_escapes.get(tail)
    if esc is not None:
        return esc
    if tail.startswith("x"):
        hexes = tail[1:]
        if len(hexes) < 2:
            raise ValueError("invalid hex string escape ('\\%s')" % tail)
        try:
            i = int(hexes, 16)
        except ValueError:
            raise ValueError("invalid hex string escape ('\\%s')" % tail)
    else:
        try:
            i = int(tail, 8)
        except ValueError:
            raise ValueError("invalid octal string escape ('\\%s')" % tail)
    return chr(i)

def evalString(s):
    assert s.startswith("'") or s.startswith('"'), repr(s[:1])
    q = s[0]
    if s[:3] == q*3:
        q = q*3
    assert s.endswith(q), repr(s[-len(q):])
    assert len(s) >= 2*len(q)
    s = s[len(q):-len(q)]
    return re.sub(r"\\(\'|\"|\\|[abfnrtv]|x.{0,2}|[0-7]{1,3})", escape, s)

def test():
    for i in range(256):
        c = chr(i)
        s = repr(c)
        e = evalString(s)
        if e != c:
            print i, c, s, e

if __name__ == "__main__":
    test()

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Editing: literals.py

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