def save_and_log_out():
'''Function to overwrite the account file with the current state of
the account object (i.e. including any new transactions), remove
all widgets and display the login screen.'''
global account
# Save the account with any new transactions
#print(account)
account.save_to_file()
# Reset the bank acount object
account = BankAccount()
# Reset the account number and pin to blank
account.account_number = ''
account.pin_number = ''
# Remove all widgets and display the login screen again
remove_all_widgets()
create_login_screen()
