NumPy - Indexing and Slicing
Which of the following is the correct syntax to select elements at indices 1, 3, and 5 from a NumPy array named arr?
Which of the following is the correct syntax to select elements at indices 1, 3, and 5 from a NumPy array named arr?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall fancy indexing syntax
To select multiple elements by indices, use double square brackets with a list of indices.Step 2: Check other options
Parentheses, slicing with colons, or curly braces are invalid for this purpose.Final Answer:
arr[[1, 3, 5]] -> Option BQuick Check:
Correct syntax uses double brackets = arr[[indices]] [OK]
Quick Trick: Use double brackets with list of indices for fancy indexing [OK]
Common Mistakes:
- Using parentheses instead of brackets
- Using slicing syntax incorrectly
- Using curly braces which are invalid
Master "Indexing and Slicing" in NumPy
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