transcript_support_level attr would cause error when containing space.

[y9c]

As mentioned in gtfparse code, latest Ensembl release add "(assigned to previous version ?)" in the transcript_support_level tag. Although gtfparse tried to fix this by splitting all attributes, it is not a good way to fix this. Some attributes might require space inside.

https://github.com/openvax/gtfparse/blame/7d25135fed6a1a7c60218cedc1dfac2446683183/gtfparse/attribute_parsing.py#L73-L76C60

Solution:

e03a213

[iskandr]

Can you say more about when this fails? Do you think the right answer is to have gtfparse preserve the full string and then have PyEnsembl split it?