def hello():
    print("Hi there!")

if __name__ == '__main__':     
    hello()
    print('dir(hello):\n',dir(hello))
    print(hello.__name__)
    print('inquiry about attribute:',hasattr(hello,'numerical_value'))
    # since False, add the attribute:
    print(80*'-')
    print("setting a new attribute 'numerical_value' to value 101")
    setattr(hello,'numerical_value',101)
    print('dir(hello):\n',dir(hello))
    print('inquiry about attribute:',hasattr(hello,'numerical_value'))
    print(hello.numerical_value)