How to extract numbers from a string using Python?

You can extract numbers from a string using either regular expressions or built-in string methods.

Utilize regular expressions:

import re

s = "abc123def456"
numbers = re.findall(r'\d+', s)
print(numbers)  # ['123', '456']

Utilizing string methods:

s = "abc123def456"
numbers = ''.join(filter(str.isdigit, s))
print(numbers)  # '123456'

If you need to extract decimal numbers, you can make some modifications.

import re

s = "abc1.23def4.56"
numbers = re.findall(r'\d+\.\d+', s)
print(numbers)  # ['1.23', '4.56']

s = "abc1.23def4.56"
numbers = ''.join(filter(lambda x: x.isdigit() or x == '.', s))
print(numbers)  # '1.234.56'