Feature/export png with dpi

[srinathkp]

For #133 - Allow setting dpi/density when exporting circuits to PNG

New method QubitCircuit.draw() to export svg and png images. Density in dpi can be an argument from the user for conversion to png ( defaults to 100dpi).

[BoxiLi]

Looks good. I'll test it locally later today. The falling linting is just the black python styling.

We don't really want to include ipynb files in the repo because they are binary and are pretty large. They won't be automatically executed by pytest anyway.

Instead, you could add a test to test_circuit.py. If pdflatex is not installed, the test should be ignored. Otherwise, the test checks if a plot is successfully generated. What do you think?

[srinathkp]

• Add test to py_test.py
• Remove ipynb file
• Add density_dpi argument to old _make_converter to avoid duplication

[srinathkp]

Hi @BoxiLi , I've added the density argument to old converter and added a test that looks for exported png files(with different dpi) and SVG.

[BoxiLi]

Looks good! Thank you!
I left some comments to clear the logic in the code. Don't worry about the coverage, the CI has no pdflatex installed.

[BoxiLi]

Tested it locally, LGTM!

[BoxiLi]

@srinathkp Congrats!

[srinathkp]

Thanks Boxi ! Many more to come hopefully 💥🤞