The main problem with using a Python counter to calculate an infinite series is that the counter will eventually overflow. This can cause unexpected results when trying to calculate the series.

def counter(): i = 0 while True: yield i i += 1

This is a generator function that returns an infinite sequence of integers, starting from 0.

## What is infinite series

An infinite series is a sequence of numbers that continues to grow without end. In Python, an infinite series can be represented using the following syntax:

series = [x_1, x_2, x_3, …]

The first number in the series is x_1 and the last number in the series is x_n. The sequence will continue to grow forever, and each new addition to the series will be equal to the sum of the previous two numbers in the series.

## About series

The About series in Python is a set of tutorials that teach you how to use the Python programming language. The first tutorial in the series, About Python, covers the basics of Python programming.