[Solved] The following code throws an error. What is the problem?import numpy as np arr = np.array([[1, 2], [3, 4]]) cum_sum = np.cumsum(arr, axis=2) print(cum_sum) | NumPy

NumPy - Aggregation Functions

The following code throws an error. What is the problem?

import numpy as np
arr = np.array([[1, 2], [3, 4]])
cum_sum = np.cumsum(arr, axis=2)
print(cum_sum)

ASyntax error in np.cumsum call

Bnp.cumsum does not accept axis parameter

CArray must be 1D for cumsum

DAxis 2 does not exist for a 2D array

Step-by-Step Solution

Solution:

Step 1: Check array dimensions
The array has shape (2, 2), so it has axes 0 and 1 only.
Step 2: Validate axis parameter
Using axis=2 is invalid because axis 2 does not exist for this 2D array, causing an error.
Final Answer:
Axis 2 does not exist for a 2D array -> Option D
Quick Check:
Axis must be within array dimensions [OK]

Quick Trick: Axis must be less than array dimensions [OK]

Common Mistakes:

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