Write a program in Python to find the index for NaN value in a given series

Input −

Assume, you have a series,

0    1.0 1    2.0 2    3.0 3    NaN 4    4.0 5    NaN

Output −

 And, the result for NaN index is,

index is 3 index is 5

Solution

To solve this, we will follow the steps given below −

• Define a Series.

• Create for loop and access all the elements and set if condition to check isnan(). Finally print the index position. It is defined below,

for i,j in data.items(): if(np.isnan(j)):    print("index is",i)

Example

Let us see the following implementation to get a better understanding.

import pandas as pd import numpy as np l = [1,2,3,np.nan,4,np.nan] data = pd.Series(l) print(data) for i,j in data.items():    if(np.isnan(j)):       print("index is",i)

Output

0    1.0 1    2.0 2    3.0 3    NaN 4    4.0 5    NaN dtype: float64 index is 3 index is 5