[Solved] What is the issue with this code snippet?import numpy as np arr = np.array([5, 10, 15]) new_arr = arr[np.newaxis:] print(new_arr.shape) | NumPy

NumPy - Array Manipulation

What is the issue with this code snippet?

import numpy as np
arr = np.array([5, 10, 15])
new_arr = arr[np.newaxis:]
print(new_arr.shape)

Anp.newaxis should be replaced with None

BIncorrect slicing syntax; np.newaxis cannot be used as a slice

CThe array is empty, so shape is invalid

DNo error; code runs correctly

Step-by-Step Solution

Solution:

Step 1: Understand np.newaxis usage
np.newaxis is used inside indexing to add a dimension, but it cannot be used as a slice like np.newaxis:
Step 2: Identify error
The syntax arr[np.newaxis:] is invalid because np.newaxis is not a valid slice object.
Final Answer:
Incorrect slicing syntax; np.newaxis cannot be used as a slice -> Option B
Quick Check:
np.newaxis is an index, not a slice [OK]

Quick Trick: np.newaxis is an index, not a slice; cannot use ':' with it [OK]

Common Mistakes:

Master "Array Manipulation" in NumPy

9 interactive learning modes - each teaches the same concept differently

More NumPy Quizzes

What is the issue with this code snippet?