input: from typing import List
  
  def generate_random_password() -> str:
      """ Generate a Random Password of length 8 characters, which contains at least one 
      of each character type (lowercase, uppercase, digits, special characters).
      Example usage:
      >>> generate_random_password()
      'A1b$2c3d'
      """
      import string
      import random
      
      # length of password
      length = 8
      
      # special characters
      special_characters = "!#$%&'()*+,-./:;<=>?@[\]^_`{|}~"
      
      # generating password
      password = random.choice(string.ascii_lowercase)
      password += random.choice(string.ascii_uppercase)
      password += random.choice(string.digits)
      password += random.choice(special_characters)
      
      for i in range(4):
          password += random.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits + special_characters)
      
      password  = ''.join(random.sample(password,len(password)))
      
      return password
output:     return password