Pandas Data Series: Check inequality over the index axis of a given dataframe and a given series

Last update on September 05 2025 12:40:21 (UTC/GMT +8 hours)

40. DataFrame-Series Inequality

Write a Pandas program to check inequality over the index axis of a given dataframe and a given series.

Sample Solution :

Python Code :

import pandas as pd
df_data = pd.DataFrame({'W':[68,75,86,80,None],'X':[78,75,None,80,86], 'Y':[84,94,89,86,86],'Z':[86,97,96,72,83]});
sr_data = pd.Series([68, 75, 86, 80, None]) 
print("Original DataFrame:")
print(df_data)
print("\nOriginal Series:")
print(sr_data)
print("\nCheck for inequality of the said series & dataframe:")
print(df_data.ne(sr_data, axis = 0))

Sample Output:

Original DataFrame:
      W     X   Y   Z
0  68.0  78.0  84  86
1  75.0  75.0  94  97
2  86.0   NaN  89  96
3  80.0  80.0  86  72
4   NaN  86.0  86  83

Original Series:
0    68.0
1    75.0
2    86.0
3    80.0
4     NaN
dtype: float64

Check for inequality of the said series & dataframe:
       W      X     Y     Z
0  False   True  True  True
1  False  False  True  True
2  False   True  True  True
3  False  False  True  True
4   True   True  True  True

Explanation:

df_data = pd.DataFrame({'W':[68,75,86,80,None],'X':[78,75,None,80,86], 'Y':[84,94,89,86,86],'Z':[86,97,96,72,83]});
sr_data = pd.Series([68, 75, 86, 80, None])

The above code creates a Pandas DataFrame object 'df_data' containing four columns ('W', 'X', 'Y', 'Z') and five rows, and a Pandas Series object 'sr_data' containing the same values as the 'W' column of the DataFrame.

df_data.ne(sr_data, axis = 0) : Here .ne() method is used to compare the dataframe df_data with the series sr_data. ne stands for "not equal". The axis=0 parameter tells pandas to compare the rows of the dataframe and the series. The resulting dataframe will have the same shape as df_data and will contain boolean values indicating whether the corresponding elements in df_data are not equal to the values in sr_data.

For more Practice: Solve these Related Problems:

Write a Pandas program to check inequality over the index axis between a DataFrame and a Series after applying a mathematical function.
Write a Pandas program to compare a DataFrame and a Series for inequality and then highlight differing cells.
Write a Pandas program to perform element-wise inequality comparison between a DataFrame and a Series and count mismatches.
Write a Pandas program to check inequality over the index axis between a DataFrame and a Series and return a boolean DataFrame.

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