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Here's an example of a generator function that produces a sequence of numbers, def my_generator(n): # initialize counter value = 0 # loop until counter is less than n while value < n: # produce the current value of the counter yield value # increment the counter value += 1 # iterate over the generator object produced by my_generator for value in my_generator(3 In this tutorial, we will learn simple ways to display output to users and take input from users in Python with the help of examples. Start Now. Create a Set in Python . Python lists store multiple data together in a single variable. You will be amazed by how much you can do in Python once you know the basics. txt in writing mode. ). If we do not pass any parameter, zip() returns an empty iterator If a single iterable is passed, zip() returns an iterator of tuples with each tuple having only one element. 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