Different meanings of brackets in Python

Question

I am curious, what do the 3 different brackets mean in Python programming? Not sure if I\'m correct about this, but please correct me if I\'m wrong:

[] - # No         


        

Answer 1

In addition to Maltysen's answer and for future readers: you can define the [] and () operators in a class, by defining the class methods:

• __call__(self[, args...]) for ()
• __getitem__(self, key) for []

An example is numpy.mgrid[...]. In this way you can define it on your custom-made objects for any purpose you like.