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1. Reverse a String2. Check Palindrome String3. Count Vowels in String4. Count Consonants in String5. Count Digits in String6. Remove Special Characters7. Remove Whitespace8. Find Substring9. Replace Substring10. Character Frequency11. Capitalize First Letter of Each Word12. Convert String to Title Case13. Sort String Characters14. Find Longest Word15. Find Shortest Word16. String Compression17. String Rotation18. Anagram Check19. Split and Join Strings20. Count Words in String21. Extract Numbers from String22. Validate Email Using Regex23. Validate Phone Number Using Regex24. Check Pangram25. Convert snake_case to camelCase

Extract Numbers from String in Python

Extract all integer numbers from a mixed string.

IntermediateString ProgramsExample 21 of 25
extract-numbers-from-string.py
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1# Program to extract numbers from a string
2

3import re
4

5s = input("Enter a string: ")
6

7numbers = re.findall(r"\d+", s)
8

9print("Numbers found:", numbers)

Output

Enter a string: a12b3c45
Numbers found: ['12', '3', '45']

What's going on

We use a regex \d+ to find all sequences of digits in the string.

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