Harrison Harrison - 3 months ago 65
Python Question

How can I remove all non-alphanumeric characters from a string, except for '#', with regex?

I currently have this line

address = re.sub('[^A-Za-z0-9]+', ' ', address).lstrip()
which will remove all special characters from my string
address
. How can I modify this line to keep
#
?

Answer

In order to avoid removing the hash symbol, you need to add it into the negated character class:

r'[^A-Za-z0-9#]+'
             ^

See the regex demo

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