Pandas: Check for inequality of two given DataFrames

Last update on May 01 2025 12:54:17 (UTC/GMT +8 hours)

80. Check Inequality of Two DataFrames

Write a Pandas program to check for inequality of two given DataFrames.

Sample Solution :

Python Code :

import pandas as pd
df1 = pd.DataFrame({'W':[68,75,86,80,None],'X':[78,85,None,80,86], 'Y':[84,94,89,83,86],'Z':[86,97,96,72,83]});
df2 = pd.DataFrame({'W':[78,75,86,80,None],'X':[78,85,96,80,76], 'Y':[84,84,89,83,86],'Z':[86,97,96,72,83]});
print("Original DataFrames:")
print(df1)
print(df2)
print("\nCheck for inequality of the said dataframes:")
print(df1.ne(df2))

Sample Output:

Original DataFrames:
      W     X   Y   Z
0  68.0  78.0  84  86
1  75.0  85.0  94  97
2  86.0   NaN  89  96
3  80.0  80.0  83  72
4   NaN  86.0  86  83
      W   X   Y   Z
0  78.0  78  84  86
1  75.0  85  84  97
2  86.0  96  89  96
3  80.0  80  83  72
4   NaN  76  86  83

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

For more Practice: Solve these Related Problems:

Write a Pandas program to compare two DataFrames element-wise for inequality and then output a boolean DataFrame of the results.
Write a Pandas program to check for differences between two DataFrames and then count the number of mismatches per column.
Write a Pandas program to compute the inequality mask between two DataFrames and then filter the rows where any differences occur.
Write a Pandas program to compare two DataFrames for inequality and then generate a summary report of the differing cells.

Go to:

Previous: Write a Pandas program to create a DataFrame from the clipboard (data from an Excel spreadsheet or a Google Sheet).
Next: Write a Pandas program to get lowest n records within each group of a given DataFrame.

Python-Pandas Code Editor:

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