[python] Added a draft of a transformer into native python objects.

[KOLANICH]

Currently IDK how to identify a type of a value, so all the values are strings.

[biojppm]

Thanks for the MR - it is definitely useful. Can you add unit tests?

[KOLANICH]

Probably. Should I add them into an already existing file or should I create a new one?

[biojppm]

You can create a new one, in this folder

[codecov]

Codecov Report

Merging #169 (b817bd7) into master (74c8031) will decrease coverage by 0.04%.
The diff coverage is n/a.

❗ Current head b817bd7 differs from pull request most recent head feb7501. Consider uploading reports for the commit feb7501 to get more accurate results

@@            Coverage Diff             @@
##           master     #169      +/-   ##
==========================================
- Coverage   96.39%   96.34%   -0.05%     
==========================================
  Files          22       63      +41     
  Lines        8064    12781    +4717     
==========================================
+ Hits         7773    12314    +4541     
- Misses        291      467     +176     

Impacted Files	Coverage Δ
src/c4/yml/common.hpp	90.47% <0.00%> (-9.53%)	⬇️
src/c4/yml/parse.cpp	92.71% <0.00%> (-3.05%)	⬇️
src/c4/yml/common.cpp	85.41% <0.00%> (-2.96%)	⬇️
src/c4/yml/parse.hpp	98.55% <0.00%> (-1.45%)	⬇️
src/c4/yml/node.hpp	97.65% <0.00%> (-0.20%)	⬇️
src/c4/yml/detail/print.hpp	95.83% <0.00%> (-0.17%)	⬇️
src/c4/yml/tree.hpp	98.85% <0.00%> (-0.12%)	⬇️
src/c4/yml/tree.cpp	94.45% <0.00%> (-0.07%)	⬇️
samples/quickstart.cpp	99.50% <0.00%> (-0.04%)	⬇️
src/c4/yml/node.cpp	100.00% <0.00%> (ø)
... and 53 more

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[biojppm]

What's up with this error?

[KOLANICH]

It is extremily strange, especially given that my machine is 64-bit Ubuntu (for which the test pipeline also fails, it looks like it fails for all 64-bit machines, but for me the test works).

BTW what should I do to the DOC node (present when the root is a scalar, these cases are commented out)? And is there any way to get a type (string, int, float, bool) of a value node?

[KOLANICH]

@biojppm

[KOLANICH]

ruamel.yaml safe parser is currently faster than ryml-based parser with my very rudimentary postprocessor.

2000 files:
ruamel.yaml: 23.7 s;
ryaml.parse_to_python: 20.5 s
ryaml.parse_in_arena: 0.5 s

1 file bigger and more complex than any of them (100 iterations)
ruamel.yaml: 18.0 s;
ryaml.parse_to_python: 22.3 s
ryaml.parse_in_arena: 0.45 s

So, if accelerate yaml parsing for python using ryaml, then the conversion should probably be done in native code.