We were recently debugging some code like this:
re.compile('\\\\/')This is legal Python (equivalent to r'\\/') but possibly buggy. It would be safer and clearer to say r'\\/' if that's what you want - and the 're' manual highly recommends you should use raw strings here. In Python (unlike C, Perl, Python REs and most unix tools) backslashes followed by a non-special character in a string literal are passed through as backslashes, which in my small survey surprised many people. This patch gives a warning for string constants containing a backslash followed by a character with no escaped meaning. This seems like a good way to catch strings that ought to be raw strings. -- Martin
2012-08-31-pylint-backslashes-cleaned.diff
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