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Python Exercise: Check if a given set is superset of itself and superset of another given set

Python sets: Exercise-18 with Solution

Write a Python program to check if a given set is superset of itself and superset of another given set.

Sample Solution:-

Python Code:

nums = {10,20,30,40,50}
print("Original set: ",nums)
print("If nums is superset of itself?")
print(nums.issuperset(nums))
num1 = {1, 2, 3, 4, 5, 7}
num2 = {2, 4}
num3 = {2, 4}
print("\nnum1 = ", num1)
print("num2 = ", num2)
print("num3 = ", num3)
print("If mum1 is superset of num2:")
print(num1>num2)
print("Compare mum2 and num3:")
print("If mum2 is superset of num3:")
print(num2>num3)
print("If mum3 is superset of num2:")
print(num3>num2)

Sample Output:

Original set:  {40, 10, 50, 20, 30}
If nums is superset of itself?
True

num1 =  {1, 2, 3, 4, 5, 7}
num2 =  {2, 4}
num3 =  {2, 4}
If mum1 is superset of num2:
True
Compare mum2 and num3:
If mum2 is superset of num3:
False
If mum3 is superset of num2:
False

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Previous: Write a Python program to check if two given sets have no elements in common.
Next: Write a Python program to find the elements in a given set that are not in another set.

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Python: Tips of the Day

Python: Cache results with decorators

There is a great way to cache functions with decorators in Python. Caching will help save time and precious resources when there is an expensive function at hand.

Implementation is easy, just import lru_cache from functools library and decorate your function using @lru_cache.

from functools import lru_cache

@lru_cache(maxsize=None)
def fibo(a):
    if a <= 1:
        return a
    else:
        return fibo(a-1) + fibo(a-2)

for i in range(20):
    print(fibo(i), end="|")

print("\n\n", fibo.cache_info())

Output:

0|1|1|2|3|5|8|13|21|34|55|89|144|233|377|610|987|1597|2584|4181|

 CacheInfo(hits=36, misses=20, maxsize=None, currsize=20)