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array_api_compat_unified_numpy_cupy_pytorch_operations.py

python

This example demonstrates how to write a library function that works in

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array_api_compat_unified_numpy_cupy_pytorch_operations.py
1import array_api_compat
2from array_api_compat import array_namespace
3
4def mean_standard_deviation(x):
5    # Get the proper array API namespace for the input array x
6    xp = array_namespace(x)
7    
8    # Use the namespace xp to call functions. 
9    # These will work regardless of whether x is a NumPy, CuPy, or PyTorch array.
10    mu = xp.mean(x)
11    sigma = xp.std(x)
12    
13    return mu, sigma
14
15# Example usage with NumPy
16import numpy as np
17x_np = np.array([1.0, 2.0, 3.0])
18print(f"NumPy: {mean_standard_deviation(x_np)}")
19
20# Example usage with PyTorch (if installed)
21try:
22    import torch
23    x_torch = torch.tensor([1.0, 2.0, 3.0])
24    print(f"PyTorch: {mean_standard_deviation(x_torch)}")
25except ImportError:
26    pass