Python isalnum() Method

Python 字符串Python Strings


Description

The isalnum() method checks whether the string consists of letters and digits.

Syntax

Syntax of the isalnum() method:

str.isalnum()

Parameters

  • None.

Return Value

Returns True if the string has at least one character and all characters are letters or digits; otherwise, returns False.

Example

The following example demonstrates the isalnum() method:

Example (Python 2.0+)

#!/usr/bin/python # -*- coding: UTF-8 -*- str = "this2009"; # No spaces in the string print str.isalnum(); str = "this is string example....wow!!!"; print str.isalnum();

The output of the above example is:

True
False

Python 字符串Python Strings

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