In this example, we will learn how to calculate the sum of a series (1 + 1/2 + 1/3 + … + 1/N) in Python.

### Source Code

```
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
n = int(input("Enter the number of terms: "))
sum1 = 0
while n > 0:
sum1 = sum1 + (1 / n)
n = n - 1
print("The sum of series is", round(sum1, 2))
```

Output:

```
Enter the number of terms: 5
The sum of series is 2.28
Enter the number of terms: 10
The sum of series is 2.93
```