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Python Exercise: Find the elements in a given set that are not in another set

Python sets: Exercise-19 with Solution

Write a Python program to find the elements in a given set that are not in another set.

Sample Solution:-

Python Code:

sn1 = {1,2,3,4,5}
sn2 = {4,5,6,7,8}
print("Original sets:")
print(sn1)
print(sn2)
print("Difference of sn1 and sn2 using difference():")
print(sn1.difference(sn2))
print("Difference of sn2 and sn1 using difference():")
print(sn2.difference(sn1))
print("Difference of sn1 and sn2 using - operator:")
print(sn1-sn2)
print("Difference of sn2 and sn1 using - operator:")
print(sn2-sn1)

Sample Output: 

riginal sets:
{1, 2, 3, 4, 5}
{4, 5, 6, 7, 8}
Difference of sn1 and sn2 using difference():
{1, 2, 3}
Difference of sn2 and sn1 using difference():
{8, 6, 7}
Difference of sn1 and sn2 using - operator:
{1, 2, 3}
Difference of sn2 and sn1 using - operator:
{8, 6, 7}

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Previous: Write a Python program to check if a given set is superset of itself and superset of another given set.
Next: Write a Python program to check a given set has no elements in common with other given set.

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Python: Tips of the Day

Python: Time library

Time library provides lots of time related functions and methods and is good to know whether you're developing a website or apps and games or working with data science or trading financial markets. Time is essential in most development pursuits and Python's standard time library comes very handy for that.

Let's check out a few simple examples:

moment=time.strftime("%Y-%b-%d__%H_%M_%S",time.localtime())

import time
time_now=time.strftime("%H:%M:%S",time.localtime())
print(time_now)
date_now=time.strftime("%Y-%b-%d",time.localtime())
print(date_now)

Output:

11:36:34
2020-Nov-30