What is the difference between np.zeros(), np.ones(), and np.empty()?

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kerina

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In NumPy, these functions are essential for initializing arrays efficiently:

np.zeros((3,3)): Creates a 3×3 array of zeros.
np.ones((3,3)): Creates a 3×3 array of ones.
np.empty((3,3)): Creates an uninitialized array (filled with random values from memory).

Use empty() when performance matters and initialization isn’t needed. Learning how to use these functions effectively is a key topic in the Best Python Course because they form the foundation for numerical computing, data preprocessing, and scientific analysis.

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Topic starter Posted : 12/11/2025 5:49 am

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