input: Write a function to set up GPIO pins, import necessary modules, define operating modes, prompt for password and mode selection, check license validity and user registration, calculate BAC, open solenoid to dispense beer if valid license and BAC below threshold, and record swipe data in appropriate file. The function should return True if the operation is successful and False if there is an error.
  assert perform_operations("admin", "normal", "Yes", 0.05) == True
  assert perform_operations("admin", "party", "No", 0.03) == False
  assert perform_operations("admin", "barkeep", "Yes", 0.15) == False
  assert perform_operations("wrongpass", "normal", "Yes", 0.02) == False
  assert perform_operations("admin", "normal", "No", 0.04) == False
output: def perform_operations(password, mode, license_valid, bac):
      if password != "admin":
          return False
      if mode not in ["normal", "party", "barkeep"]:
          return False
      if license_valid != "Yes":
          return False
      if bac >= 0.08:
          return False
      return True