input: Write a function to generate a random password of length 8, which consists of alphanumeric characters and at least one special character. If the generated password does not contain at least one special character, it should generate the password again. Return the generated password.
  
  import string
  import random
  
  def generate_password():
      chars = string.ascii_letters + string.digits + string.punctuation
      pwd_length = 8
  
      password = ''
      for i in range(pwd_length):
          password += random.choice(chars)
      
      # Check if at least one special character exists in the password
      if any([char in string.punctuation for char in password]):
          return password
      else:
          return generate_password()
  
  print(generate_password())
output: import string
  import random
  
  def generate_password():
      chars = string.ascii_letters + string.digits + string.punctuation
      pwd_length = 8
  
      password = ''
      for i in range(pwd_length):
          password += random.choice(chars)
      
      if any([char in string.punctuation for char in password]):
          return password
      else:
          return generate_password()