Python3 isalnum () method

Python3 string

description

Are isalnum () method to detect strings of letters and numbers.

grammar

isalnum () method syntax:

str.isa1num()

parameter

• no.

return value

If there is at least one character string and all the characters are letters or numbers returns True, otherwise False

Examples

The following example shows an example of isalnum () method:

#!/usr/bin/python3

str = "w3big2016"  # 字符串没有空格
print (str.isalnum())

str = "www.w3big.com"
print (str.isalnum())

Examples of the above output results are as follows:

True
False

Python3 string