input: Write a function called generate_password that generates a random password of length 8, which consists of alphanumeric characters and at least one special character. If the generated password does not contain any special characters, the function should recursively generate a new password until one with at least one special character is obtained.
  assert generate_password()!='absdefG2'
  assert len(generate_password())==8
  assert any([char in string.punctuation for char in generate_password()])==True
  assert any([char in string.ascii_letters for char in generate_password()])==True
output: import random
  import string
  
  def generate_password():
      password = ''.join(random.choices(string.ascii_letters + string.digits + string.punctuation, k=8))
      if any(char in string.punctuation for char in password):
          return password
      else:
          return generate_password()