Python - Remove all characters except letters and numbers

When it is required to remove all characters except for letters and numbers, regular expressions are used. A regular expression is defined, and the string is subjected to follow this expression.

Example

Below is a demonstration of the same

import re my_string = "python123:, .@! abc" print ("The string is : ") print(my_string) result = re.sub('[\W_]+', '', my_string) print ("The expected string is :") print(result)

Output

The string is : python123:, .@! abc The expected string is : python123abc

Explanation

• The required packages are imported.

• A string is defined and is displayed on the console.

• A regular expression is defined, and the string is subjected to it.

• The result is assigned to a variable.

• This is displayed as output on the console.