Python Pandas: Get the items of a given series not present in another given series
Python Pandas: Data Series Exercise-16 with Solution
Write a Pandas program to get the items of a given series not present in another given series.
Sample Solution :
Python Code :
import pandas as pd sr1 = pd.Series([1, 2, 3, 4, 5]) sr2 = pd.Series([2, 4, 6, 8, 10]) print("Original Series:") print("sr1:") print(sr1) print("sr2:") print(sr2) print("\nItems of sr1 not present in sr2:") result = sr1[~sr1.isin(sr2)] print(result)
Original Series: sr1: 0 1 1 2 2 3 3 4 4 5 dtype: int64 sr2: 0 2 1 4 2 6 3 8 4 10 dtype: int64 Items of sr1 not present in sr2: 0 1 2 3 4 5 dtype: int64
Python Code Editor:
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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())
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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