Returning a NumPy Array as an Evaluatable String with array_repr()
Simply Printing a NumPy Array
When you simply print a NumPy array, it looks like this:
>>> import numpy as np
>>> a = np.arange(12).reshape(3, 4)
>>> print(a)
[[ 0 1 2 3]
[ 4 5 6 7]
[ 8 9 10 11]]
This is easy to read, but since the elements are not separated by commas, you cannot copy and paste this output into another code to use it as a constant.
numpy.array_repr
There is a function called numpy.array_repr() that returns an evaluatable string, and when you use it, you get the following:
>>> print(np.array_repr(a))
array([[ 0, 1, 2, 3],
[ 4, 5, 6, 7],
[ 8, 9, 10, 11]])
You can copy and paste this, add np. or so, and then use it as a constant in another code.
Of course, you could also output it to a file like .npy, but this method is more convenient if the array size is small.
https://numpy.org/doc/stable/reference/generated/numpy.array_repr.html