input: Write a python function to validate an email address using regex.
  assert is_valid_email('test.email@gmail.com') == True
  assert is_valid_email('invalid-email@') == False
  assert is_valid_email('another.test@domain.co') == True
  assert is_valid_email('wrong@domain,com') == False
output: import re
  
  def is_valid_email(email):
      pattern = r'^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$'
      return bool(re.match(pattern, email))