Python · Strings

str.isdigit() / isalpha()

Tests whether every character belongs to the category. Empty strings return False.

pythonRunnable example python course

Syntax

text.isdigit()

Example

Open in the lab

print("42".isdigit(), "abc".isalpha(), "a1".isalnum())

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.