Python: Remove everything except alphanumeric characters from a string

Last update on April 23 2025 12:54:07 (UTC/GMT +8 hours)

41. Remove Non-Alphanumerics

Write a Python program to remove everything except alphanumeric characters from a string.

Sample Solution:

Python Code:

import re
text1 = '**//Python Exercises// - 12. '
pattern = re.compile('[\W_]+')
print(pattern.sub('', text1))

Sample Output:

PythonExercises12

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to remove all characters from a string except letters and digits.
• Write a Python script to filter out non-alphanumeric symbols from a text and then print the cleaned string.
• Write a Python program to strip punctuation and special characters from a string, leaving only alphanumerics.
• Write a Python program to use regex to eliminate all non-alphanumeric characters from an input string.

Go to:

• Python Regular Expression Exercises Home ↩
• Python Exercises Home ↩

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Python Code Editor:

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