[YYDW-i]

Description

The simple_moving_average() function currently checks whether window_size is positive, but does not explicitly validate its type.

Passing a float such as 2.5 results in an unclear error during slicing.

This PR adds explicit type validation for window_size.

Changes

• Reject non-integer window sizes with a TypeError.
• Reject boolean values, which Python treats as a subclass of int.
• Add a doctest for a floating-point window size.
• Preserve the existing validation for non-positive integer values.

Testing

Added a doctest covering window_size=2.5.

Local tests have not been run. CI results are pending.

[algorithms-keeper]

Closing this pull request as invalid

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