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Which of the following Python code snippets correctly initializes the first sliding window of size 4 over a list named data?

easy📝 Syntax Q3 of 15
Rest API - Rate Limiting and Throttling
Which of the following Python code snippets correctly initializes the first sliding window of size 4 over a list named data?
Awindow = data[1:4]
Bwindow = data[0:4]
Cwindow = data[:3]
DAll of the above
Step-by-Step Solution
Solution:
  1. Step 1: Understand Python slicing for window initialization

    Python slicing data[0:4] creates a window of exactly size 4 starting from the beginning.
  2. Step 2: Confirm correct option creates a window of size 4

    data[0:4] covers 4 elements; data[1:4] covers 3 elements (indices 1,2,3); data[:3] covers 3 elements (0,1,2); All of the above is incorrect.
  3. Final Answer:

    window = data[0:4] -> Option B
  4. Quick Check:

    Python slices with length 4 = valid windows [OK]
Quick Trick: Python slice [start:end] covers end-start elements [OK]
Common Mistakes:
  • Off-by-one errors in slice indices
  • Confusing slice indices and window size

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