Web Reference: Jan 4, 2025 · The isidentifier() method in Python is used to check whether a given string qualifies as a valid identifier according to the Python language rules. Identifiers are names used to identify variables, functions, classes, and other objects. The isidentifier() method returns True if the string is a valid identifier, otherwise False. A string is considered a valid identifier if it only contains alphanumeric letters (a-z) and (0-9), or underscores (_). Python String isidentifier () method is used to check if the string is a valid identifier according to Python language. In this tutorial, you will learn the syntax and usage of String isidentifier () method.
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