Python Exercise: Remove an item from a set if it is present in the set
Python sets: Exercise-5 with Solution
Write a Python program to remove an item from a set if it is present in the set.
Sample Solution:-
Python Code:
#Create a new set
num_set = set([0, 1, 2, 3, 4, 5])
#Discard number 4
num_set.discard(4)
print(num_set)
Sample Output:
{0, 1, 2, 3, 5}
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Previous: Write a Python program to remove item(s) from set.
Next: Write a Python program to create an intersection of sets.
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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)
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