You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
import re

def validate_ipv4_address(ip):
  """Validates an IPv4 address."""
  pattern = re.compile(r"^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$")
  return True if pattern.match(ip) else False

if __name__ == "__main__":
  ip = '1.2.3.4'
  valid = validate_ipv4_address(ip)
  print(valid)
user
True
assistant