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bpo-30349: Raise FutureWarning for nested sets and set operations (#1553)

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in regular expressions.
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Serhiy Storchaka 2017-11-16 12:38:26 +02:00 • committed by GitHub
parent 3daaafb700
commit 05cb728d68
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8 changed files with 106 additions and 9 deletions
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Lib/re.py
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@ -251,8 +251,9 @@ def template(pattern, flags=0):
# SPECIAL_CHARS
# closing ')', '}' and ']'
# '-' (a range in character set)
# '&', '~', (extended character set operations)
# '#' (comment) and WHITESPACE (ignored) in verbose mode
_special_chars_map = {i: '\\' + chr(i) for i in b'()[]{}?*+-|^$\\.# \t\n\r\v\f'}
_special_chars_map = {i: '\\' + chr(i) for i in b'()[]{}?*+-|^$\\.&~# \t\n\r\v\f'}
def escape(pattern):
"""