16 июл. 2019 г. · I want to know if there is a way to check for special characters in a string. To my knowledge, there is no built-in function to do it, like .isnumeric() or . ...

14 янв. 2018 г. · You can use a regular expression to check if a string contains characters in the а-я, А-Я range: import re def has_cyrillic(text): return bool(re.search('[а-яА ...

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? Given: a list allowedSymbols = ['b', 'c', 'z', ': ...

4 янв. 2022 г. · The better way would be to use regex to check if the string entered by the user contains a non alphanumeric characters.

19 окт. 2013 г. · I want to check if any of the characters are present in the string. This is not to check for a substring, but to check for a character in a set.

4 мар. 2015 г. · You can use this regex with anchors to check if your input contains only non-word (special) characters: ^\W+$

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 +.

7 дек. 2011 г. · re.search() will return a match object if it comes across any instances of one or more non-alphanumeric characters and None otherwise.

16 февр. 2016 г. · You can use a regular expression to check whether a string contains only digits, hyphens or slashes.