Python regex subsitution: separate backreference from digit
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python re.sub group: number after \number
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Reference to groups in a MySQL regex?
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using regex for math expressions in java?
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How does this regular expression work?
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Search and replace a pattern containing backslashes
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regex for matching something if it is not preceded by something else
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Backwards-compatible input calls in Python
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Regular expression to match digits and basic math operators
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How to make Regex choose words separately
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Regular expression to skip character in capture group
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Getting the pattern back from a compiled re?
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MongoDB reverse regex
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Regex pattern to choose data BETWEEN matching quotation marks
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How can I debug a regular expression in Python?
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What regex can match sequences of the same character?
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Correctly parsing string literals with python's re module
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Notepad++ regex backreference doesn't seem to work