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How does the re.sub work?...does it change the string according to the modified raw string or vice versa????
regular expressions substitution
2 Réponses
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here is what the documentation says:
re.sub(pattern, repl, string, count=0, flags=0)
Return the string obtained by replacing the leftmost non-overlapping occurrences of pattern in string by the replacement repl. If the pattern isn’t found, string is returned unchanged. repl can be a string or a function; if it is a string, any backslash escapes in it are processed. That is, \n is converted to a single newline character, \r is converted to a carriage return, and so forth. Unknown escapes such as \& are left alone. Backreferences, such as \6, are replaced with the substring matched by group 6 in the pattern.
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here is one example:
https://code.sololearn.com/cFox8nP2tSF8/?ref=app