I find that np.array silently catches an error raised by __array_interface__. This was confirmed to be a bug on Gitter - https://gitter.im/numpy/numpy?at=6067b4ef3153ce63a3b6dcad

Reproducing code example:

import numpy as np

class Sample:
    @property
    def __array_interface__(self):
        raise OSError

x = Sample()
try:
    x.__array_interface__
except OSError:
    print("OSError raised by __array_interface__")

np.array(x)
print("But not by np.array")

Error message:

No error. That's the problem.

The output of my code example is

OSError raised by __array_interface__
But not by np.array

NumPy/Python version information:

1.20.2 3.8.9 (default, Apr 3 2021, 19:49:13)
[Clang 12.0.0 (clang-1200.0.32.29)]