KeyError due to setting a dictionary with a cppyy string instead of a python string.

[matthew-w-lundy]

When running the vegas branch the following error appears:

8
Traceback (most recent call last):
File "/global/home/hpc5308/.local/ENV/bin/v2dl3-vegas", line 8, in
sys.exit(cli())
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/click/core.py", line 1157, in call
return self.main(*args, **kwargs)
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/click/core.py", line 1078, in main
rv = self.invoke(ctx)
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/click/core.py", line 1434, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/click/core.py", line 783, in invoke
return __callback(*args, **kwargs)
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/pyV2DL3/script/v2dl3_for_vegas.py", line 261, in cli
ea_file = EffectiveAreaFile(ea_file)
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/pyV2DL3/vegas/EffectiveAreaFile.py", line 58, in init
self.axis_dict, self.index_dict = self.build_index()
File "/global/home/hpc5308/.local/ENV/lib/python3.8/site-packages/pyV2DL3/vegas/EffectiveAreaFile.py", line 96, in build_index
check_num *= len(np.unique(index_dict[k]))
KeyError: 'Azimuth'

In index_dict the keys are set to <class cppyy.gbl.std.string at 0x22b4ac90> instead of a <class 'str'>. These should be equivalent but they throw a key error in some configurations. If you add the line "name=str(name)" above this section of the code https://github.com/VERITAS-Observatory/V2DL3/blob/ee2a5fc6a06cfe1a826db9073fb09536357033b9/pyV2DL3/vegas/EffectiveAreaFile.py#L79C1-L79C42 it will work. This might be good as a small commit to the main branch

[matthew-w-lundy]

Located first by @BryanOwens55

[wlav]

In index_dict the keys are set to <class cppyy.gbl.std.string at 0x22b4ac90> instead of a <class 'str'>. These should be equivalent but they throw a key error in some configurations.

Do you have a reproducer? They really should be the same in all cases since the strings hash to the same values. Example:

import cppyy

s1 = "Hello, World!"
s2 = cppyy.gbl.std.string(s1)

d = {s1: True}
assert s1 in d
assert s2 in d
assert d[s2]

d[s2] = False
assert len(d) == 1
assert s1 in d
assert s2 in d
assert not d[s1]

The only reason I could see it would fail, if is there is some decoding mishap, but then str(name) would fail as well.