Apply a Function to Each Column in a DataFrame
Code Explanation:
● Function Application: apply() with axis=0 applies the function to each column.
● Lambda Function: Calculates the sum of values in each column.
● Store Result: The result is stored in the variable col_sum.
● Output Display: The column-wise sum is printed using print().
Program:
import pandas as pd
df = pd.DataFrame({
'Math': [80, 90, 85],
'Science': [75, 88, 92],
'English': [78, 83, 89]
})
col_sum = df.apply(lambda col: col.sum(), axis=0)
print(col_sum)
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