Re Module Development Tutorials, Guides & Insights

import re

# Pattern to match signed and unsigned integers/floats
pattern = r"[+-]?\d+(\.\d+)?"

# Complex string with embedded numbers
text = "In 2021, the growth was +6.5%, compared to -3.14% in 2020."

matches = re.findall(pattern, text)
print(matches)  # Output: ['2021', '+6.5', '-3.14', '2020']

• This pattern efficiently extracts all numeric values from a string, whether they are positive or negative, whole numbers or floating points.

pattern = re.compile(r'\d+')

match = re.search(r'\d+', 'The price is 100 dollars')
if match:
    print(match.group())  # Output: 100

match = re.match(r'\d+', '123 apples')
if match:
    print(match.group())  # Output: 123

match = re.fullmatch(r'\d+', '12345')
if match:
    print(match.group())  # Output: 12345