Regular Expression

import re

text = 'My phone number is 555-1234'
match = re.search(r'\d{3}-\d{4}', text)

if match:
    print(match.group())   # 555-1234

text = 'Contact us at sam@example.com or admin@test.org'
emails = re.findall(r'[\w.]+@[\w.]+', text)
print(emails)   # ['sam@example.com', 'admin@test.org']

text = 'Call 555-1234 or 555-5678'
masked = re.sub(r'\d{3}-\d{4}', 'XXX-XXXX', text)
print(masked)   # Call XXX-XXXX or XXX-XXXX

match = re.search(r'(\w+)@(\w+)\.com', 'sam@example.com')
print(match.group(1))   # sam
print(match.group(2))   # example