input: Write a python function to check the strength of a given password.
  assert password_strength("P@ssw0rd") == 10
  assert password_strength("password") == 4
  assert password_strength("Password123") == 8
  assert password_strength("P@ss") == 9
  assert password_strength("pass") == 1
output: def password_strength(password):
      strength = 0
      if any(c.islower() for c in password):
          strength += 1
      if any(c.isupper() for c in password):
          strength += 1
      if any(c.isdigit() for c in password):
          strength += 1
      if any(c in '!@#$%^&*()-_+=<>?/.,:;[]{}|~`' for c in password):
          strength += 1
      if len(password) >= 8:
          strength += 2
      if len(password) >= 12:
          strength += 2
      if len(password) >= 16:
          strength += 2
      return strength