input: from typing import List
  
  
  def generate_string(string_length: int) -> str:
      """
      Create a random string of the given length using characters from 'a' to 'z', 
      'A' to 'Z', and '0' to '9'.
      >>> generate_string(10)
      'u6bXp8Q2Lv'
      >>> generate_string(5)
      'Y3q9t'
      """
      random_characters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
      random_string = ''.join(random.choices(random_characters, k=string_length))
      return random_string
output:     import random