Read gzipped graphml files

[fabmazz]

Create python function to load a graphml file that has been compressed with gzip without necessarily unzipping it before.
This makes reading large graphs in graphml much faster, and they can use less space

• I ran rustfmt locally
• I ran cargo clippy and it suggests no changes
• I have added the tests to cover my changes.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.

[CLAassistant]

All committers have signed the CLA.

[IvanIsCoding]

Thanks for submitting this. I think this is a very welcoming addition.

However, I don’t think we should have a new mehod to support compressed files. I’d refactor the existing method to try to decompress the file based on the file extension. And perhaps an optional argument like “force_decompression” to decompress anyway even if the file extension is not what we expect

[fabmazz]

Ok I have now included everything in a single function, with the optional argument compression to force.

[IvanIsCoding]

Awesome this is looking good. I left a minor comment.

Lastly, check CONTRIBUTING.md for how to update the type stubs now that you added a new argument to an existing function. Our CI should fail you in the “Stubs” section until you update

[coveralls]

Pull Request Test Coverage Report for Build 11922843964

Details

• 25 of 25 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.004%) to 95.857%

---

Totals
Change from base Build 11897504214:	0.004%
Covered Lines:	18233
Relevant Lines:	19021

---

💛 - Coveralls

[IvanIsCoding]

I am looking forward to releasing this in 0.16!