24 авг. 2009 г. · I need to check a string containing only a..z, 0..9, and . (period) and no other character. I could iterate over each character and check the character is a..z ...

4 мар. 2011 г. · Checking type of characters present in a string: isalnum(): Returns True if all characters are alphanumeric( a to z , A to Z ,0 to9 )

9 июл. 2019 г. · How can I check in Python 3 that a string contains only characters/symbols from a given list? ... Check if the python string contains specific ...

18 окт. 2021 г. · I need to check a string (password validator) whether it contains specific characters and lenght in python.

2 нояб. 2014 г. · I'm wondering if there is more elegant way to check if the string (str = 'abcccbbaabcbca') contains only 'a','b' or 'c' than iterating over it.

18 февр. 2020 г. · To check if a string contains any character not in a set, add ^ to the beginning. To check if the string contains one or more members of a set, append +.

15 июл. 2022 г. · You could check if a string only contains a certain character, like this: def does_contain_only(char, string): return all([c == char for c in string])

18 дек. 2016 г. · Trying to create a function which with a given a regular expression which holds all the legal characters, a string will be checked if it only contains those ...

6 сент. 2013 г. · I'm trying to check if a string only contains letters, not digits or symbols. For example: >>> only_letters("hello") True >>> only_letters( ...

9 сент. 2013 г. · results in ['aba', 'acba'] . string.strip(characters) will return an empty string if the string to be stripped contains nothing but characters ...