• Py-ART version: 1.18.3
• Python version: 3.10.1
• Operating System: Linux

Description

Importing h5 file with pyart.aux_io.read_odim_h5() could not complete due to missing "version" or "source" field in file metadata.
The problem is with the lines 169 and 170 in https://github.com/ARM-DOE/pyart/blob/main/pyart/aux_io/odim_h5.py
There should be a check like there is for example lines 177 and 178.

What I Did

First, line 164 should be deleted as it is duplicated at line 170.

The lines 168-170 could be changed as follows:

h_what = hfile["what"].attrs 
if "version" in h_what:
    metadata["version"] = _to_str(h_what["version"])
if "source" in h_what:
    metadata["source"] = _to_str(h_what["source"])

I am not sure how this complies with ODIM structure, but I tested it with 2 completely different files (from different parts of the world), one had missing "source", other had missing "version" for unknown reasons. One missing (potentially unimportant) metadata field should not stop the whole reading process.