new_contents: from random import randint
  import re
  
  ABC = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ012345678901234567890123456789"
  
  def password_gen():
      password = ''.join(ABC[randint(0,81)] for i in range(0, randint(6, 20)))
      return password if re.fullmatch('(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])[a-zA-Z0-9]{6,20}', password) else password_gen()
  
subject: Create beta_password_generator.py