# Python - Remove all characters except letters and numbers

PythonServer Side ProgrammingProgramming

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.

Published on 20-Sep-2021 10:23:57