Issue with python example xrlexample5.py (numpy: int64 vs int)

[delorytheape]

Hi,

I have just attempted to use xraylib with Python and have run into a problem with the example xrlexample5.py
The example throws an exception at line 67, while attempting to call xraylib.AtomicNumberToSymbol(Z[0]), where Z=np.array([26])
The output is

Traceback (most recent call last):

File "blah/Downloads/xraylib/example/xrlexample5.py", line 67, in <module>

symbol = xraylib.AtomicNumberToSymbol(Z[0])
File "blah/miniconda3/envs/py3/lib/python3.10/site-packages/xraylib.py", line 1037, in AtomicNumberToSymbol
return _xraylib.AtomicNumberToSymbol(Z)
TypeError: in method 'AtomicNumberToSymbol', argument 1 of type 'int'

ie. It looks like AtomicNumberToSymbol is expecting an int (but getting a numpy.int64).

To confirm this, I,

• found a clean machine (Ubuntu 20.04),
• installed xraylib using conda (> conda install -c conda-forge xraylib),
• opened a python shell (python 3.9.15)
• typed the following commands

>>> import numpy as np
>>> import xraylib
>>> xraylib.__version__
'4.1.2'
>>> xraylib.AtomicNumberToSymbol(26)
'Fe'
>>> type(26)
<class 'int'>
>>> xraylib.AtomicNumberToSymbol(np.array([26])[0])
Traceback (most recent call last):
File "", line 1 in
File "~/miniconda3/envs/py3/lib/python3.9/site-packages/xraylib.py", line 1037, in AtomicNumberToSymbol
return _xraylib.AtomicNumberToSymbol(Z)
TypeError: in method 'AtomicNumberToSymbol', argument 1 of type 'int'
`>>> type(np.array([26])[0])
<class 'numpy.int64'>

[tschoonj]

Hi @delorytheape,

This bug was fixed in the 4.1.3 release. You may want to update your conda environment.

[delorytheape]

Ok - thanks.