Скачать или смотреть Python Code: NumPy 1D Array Slicing with positive index (Codes in Description Box)

import numpy as np

Base Array
Creating the array [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
arr = np.array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
print(f"Base Array: {arr}\n")
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PART 1: POSITIVE INDEX EXAMPLES
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print("--- Positive Indexing Examples ---")

Example 1: Start index 2 (inclusive) to stop index 6 (exclusive)
Output: [2 3 4 5]
print(f"Ex 1 (arr[2:6]): {arr[2:6]}")

Example 2: Start 1, Stop 8, Step 2 (every other element)
Output: [1 3 5 7]
print(f"Ex 2 (arr[1:8:2]): {arr[1:8:2]}")

Example 3: From beginning to stop index 4 (exclusive)
Output: [0 1 2 3]
print(f"Ex 3 (arr[:4]): {arr[:4]}")

Example 4: From start index 6 to the end
Output: [6 7 8 9]
print(f"Ex 4 (arr[6:]): {arr[6:]}")

Example 5: Entire array with step 3
Output: [0 3 6 9]
print(f"Ex 5 (arr[::3]): {arr[::3]}")

Example 6: Single element slice (start 3, stop 4)
Output: [3]
print(f"Ex 6 (arr[3:4]): {arr[3:4]}")
print("\n")