findall with capture
import re
line = 'There is a phone number 12345 in this row and another 42 number'
match = re.search(r'\w+ \d+', line)
if match:
print(match.group(0)) # number 12345
match = re.search(r'\w+ (\d+)', line)
if match:
print(match.group(0)) # number 12345
print(match.group(1)) # 12345
matches = re.findall(r'\w+ \d+', line)
print(matches) # ['number 12345', 'another 42']
matches = re.findall(r'\w+ (\d+)', line)
print(matches) # ['12345', '42']