Sys log

"""

    Log in system with a feature of changing username and password

"""


def input_func(part):        # 1, the user will be inputting here the choice of what he want to do.
    if part == 1:            # part 1 == while not logged in | part 2 == while logged in.
        while True:
            choice = input(""""Input the number of your choice:
            1. Sing up
            2. Login
            7. Exit\n""")
            try:
                choice = int(choice)

            except ValueError:
                print('Input the number of your choice')
                continue

            if choice == 1 or choice == 2 or choice == 7:
                break

            else:
                print('Invalid number')
                continue

        return choice

    if part == 2:
        while True:
            choice2 = input(""""Input the number of your choice:
            3. Change password
            4. Change username
            5. Logout
            7. Exit\n""")
            try:
                choice2 = int(choice2)

            except ValueError:
                print('Input the number of your choice')
                continue

            if choice2 == 3 or choice2 == 4 or choice2 == 5 or choice2 == 7:
                break

            else:
                print('Invalid number')
                continue

        return choice2


def sign_up_system():    # 2, function that responsible for the signing up.
    user_name = input('Input Username: ')
    password = input('Input password: ')
    info_storage[user_name] = password
    print('Registered! Username: ', user_name, '''
    Password: ''', password)


def change_pass():       # 3, function that changes your pass.
    new_pass = input('Type your new password: ')
    print('Your new password is: '), new_pass
    return new_pass


def change_usrname():    # 4, function that changes your user name.
    new_username = input('Type your new password: ')
    print('Your new password is: ', new_username)
    return new_username


def check_login(username, password):
    if info_storage[username] == password:
        return True
    else:
        return False


def main():              # The main function that includes everything and runs the program.
    print("Hi welcome to the Login system\n")

    info_storage = {}
    global info_storage

    done = False
    while not done:
        logged_in = False
        while not logged_in:
            choice = input_func(1)

            if choice == 1:  # Sign up
                sign_up_system()

            elif choice == 2:
                while check_login() is not True:  # Log in checks checks if the user and pass are valid or not.
                    log_in_user_name = input('Username: \n')
                    log_in_user_pass = input('Password: ')
                    check_login(log_in_user_name, log_in_user_pass)

                    if check_login is False:
                        'Invalid username or password'

                    elif check_login is True:
                        logged_in = True

            elif choice == 7:  # Exit
                done = True

        while logged_in:
            choice2 = input_func(2)  # input function part 2

            if choice2 == 3:  # change password
                new_pass = change_pass()
                info_storage[log_in_user_name] = new_pass

            elif choice2 == 4:  # Change username
                new_username = change_usrname()
                info_storage[new_username] = info_storage.pop(log_in_user_name)

            elif choice2 == 5:  # Logout
                logged_in = False

            elif choice2 == 7:  # Exit
                done = True


if __name__ == '__main__':
    main()


TRACEBACK:

C:\Users\Jony\venv\untitled\Scripts\python.exe "C:/untitled/Projects/Login syste,/log_in.py"
  File "C:/untitled/Projects/Login syste,/log_in.py", line 86
    global info_storage
    ^
SyntaxError: name 'info_storage' is assigned to before global declaration

Process finished with exit code 1