test_histogram.py::test_save does not pass

[jbdurand]

In test_histogram.py::test_save(myi), the principle is to create an Histogram object c1 from a file f1, save it into another file f2 and to create an Histogram object c2 from file f2. Then the string representations of c1 and c2 are compared:
assert str(c1) == str(c2)
The test succeeds in linux and windows CI but fails on mac. Can anyone try and tell me why, please?

[jbdurand]

@thomasarsouze: probably the cause of test failure is related to mac encoding when reading and writing files.
We will have to test this more in detail by launching the test on a real machine.