Python: Sum of the first n positive integers

Python Basic: Exercise-58 with Solution

Write a python program to sum of the first n positive integers.

Sample Solution:-

n = int(input("Input a number: "))

sum_num = (n * (n + 1)) / 2

print("1+2+....+",n,"=",int(sum_num))

========== RESTART: F:/Python_APSC/py-ex-basic-58.py ==========

Input a number: 10

1+2+....+ 10 = 55

>>>