input: 
  def generate_string(string_length: int) -> str:
      """ Generate a random string of specified length consisting of alphanumeric characters.
      >>> generate_string(5)
      'a1B2c'
      >>> generate_string(10)
      'X3yZ7pQ9oR'
      """
      random_characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
      return ''.join(random.choices(random_characters, k=string_length))
  
output:     import random
      random_characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
      return ''.join(random.choices(random_characters, k=string_length))