[BUG] TypeError with arange function

[A622266]

Describe the bug Call to arange results in TypeError in ulab. Same call gives correct result in Cpython

import ulab
from ulab import numpy as np
print('version string: ', ulab.__version__)
print('You are running ulab')

t = np.arange(start=0,stop=0.01,step=0.01/8)
print(t)

To Reproduce Run above code in ulab (esp32 s3) and get the following result: version string: 6.0.0-2D-c You are running ulab Traceback (most recent call last): File "", line 9, in TypeError: function missing 1 required positional arguments

Expected behavior from CPython: [0. 0.00125 0.0025 0.00375 0.005 0.00625 0.0075 0.00875]

[v923z]

Thanks for bringing this up! I'll look into it.

[v923z]

@A622266 Could you, please, list all possible combinations of the arguments of arange? That function is a very strange one, and sort of buggy, even in numpy.

By the way,

t = np.arange(0, 0.01, 0.01/8)

should work.

[A622266]

You are right, it does work. The issue is apparently the keywords (eg. start=). CPython allows them, even though I see now that they are not called for in the function prototype. I like them because it is a little more clear, but I can always add a comment. So perhaps we should consider this topic closed?

[v923z]

I think you encounter the problem only, if you supply all three arguments via keywords. What makes the implementation a bit difficult is the fact that the order of argument changes in an inconsistent way:

arange(stop)
arange(start, stop)
arange(start, stop, step)

Since the function works without keywords, and flash space is limited on microcontrollers, I would rather close the issue.

[A622266]

Yes I agree