You should make your own assumptions based on this.
In fact, there is another dataset I formed through parsing that addresses several points:
out of 500k python related items, most of them are python-ish, not pythonic
the majority of the items here contain excessive licensing inclusion of original code
the items here are sometimes not even python but have references
There's a whole lot of gpl summaries… See the full description on the dataset page:
https://huggingface.co/datasets/BhoomishPatel/python-code-dataset-500k.