[Solved] What is the output of the following code?import numpy as np shape = np.broadcast_shapes((3, 1), (1, 4)) print(shape) | NumPy

NumPy - Broadcasting

What is the output of the following code?

import numpy as np
shape = np.broadcast_shapes((3, 1), (1, 4))
print(shape)

A(1, 1)

B(3, 4)

C(3, 1, 4)

DError: shapes not compatible

Step-by-Step Solution

Solution:

Step 1: Check compatibility of (3,1) and (1,4)
Last dims: 1 and 4 compatible (one is 1), first dims: 3 and 1 compatible.
Step 2: Determine broadcasted shape
Broadcasted shape is max of each dimension: (3, 4).
Final Answer:
The output is (3, 4) -> Option B
Quick Check:
Broadcasted shape = (3, 4) [OK]

Quick Trick: Broadcast shape picks max dimension or 1 [OK]

Common Mistakes:

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