Toggle Case - python

Simon wishes to convert lower case alphabets to upper case and vice versa. Help Simon by writing a program which will accept a string value S as input and toggle the case of the alphabets. Numbers and special characters remain unchanged. 

Input Format: First line will contain the string value S 

Output Format: First line will contain the string value with the case of the alphabets toggled. 

Constraints: Length of S is from 2 to 100 

Sample Input/Output:

Example 1: 

Input: 

GooD mORniNg12_3 

Output: 

gOOd MorNInG12_3 

Example 2: 

Input:

R@1nBow 

Output:

r@1NbOW

Source Code:

n=input()

print(n.swapcase())