Check if one character in string is numeric or is a letter [Python]

Question

I want to check the string and see if at least one of the characters in the string is a letter or number. How would i do this?

Answer 1

You could use re.search

if re.search(r'[a-zA-Z\d]', string):

It will return a match object if the string contain at-least a letter or a digit.

Example:

>>> s = "foo0?"
>>> re.search(r'[a-zA-Z\d]', s)
<_sre.SRE_Match object; span=(0, 1), match='f'>
>>> s = "???"
>>> re.search(r'[a-zA-Z\d]', s)
>>> s = "???0"
>>> re.search(r'[a-zA-Z\d]', s)
<_sre.SRE_Match object; span=(3, 4), match='0'>
>>>