How to validate string and convert it to a specific format python

Question

I'm trying to create code that will take text input, eliminate all whitespace characters (left and right, not those between characters) and then validate if the string has following format: 'XXX XXX' (where X is letter or digit). If it doesn't (say that it has XXX-XXX or XXXXXX format) it would convert it to such format.

I know that I can use strip to remove whitespace from a string. I also know how to check the length of a string and how to convert it, but I don't know how to validate a string after using .strip().

Please provide code examples of what you've tried. As DyZ said, you can use regular expressions. — Steven G.
– Steven G., Commented Jun 13, 2018 at 16:19

user6597761 · Accepted Answer · 2018-06-13 16:41:59Z

1

Use regular expressions.

>>> import re
>>> inp.strip() 
aB8-9uG
>>> match = re.match(r"([0-9a-zA-Z]{3})(?:\-| |)([0-9a-zA-Z]{3})", _)
>>> match
<_sre.SRE_Match object; span=(0, 7), match='aB8-9uG'>
>>> match.group(1) + " " + match.group(2)
aB8 9uG

answered Jun 13, 2018 at 16:41

user6597761

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