I'm surprised it's been so difficult to find an example of the hash
character in a RegEx string -- for exactly this type of situation,
since it's so common in the real world that people want to put a pound
symbol in front of a number.
It's a character with no special meaning to the regex engine, so I'm not
in the least surprised that there aren't many examples containing it.
You could just as validly claim that there aren't many examples involving
the letter 'q'.
It depends on whether the re.VERBOSE option is passed. If you're using
a verbose regexp, you can use "#" to comment portions of it:
r = re.compile(r"""
\d+ # some digits
[aeiou] # some vowels
""", re.VERBOSE)
-tkc
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