Load/save dataframe #163

[dessygil]

Taking the code provided and added to test cases to load and save data frames. The code was placed into the datamol/utils file. This can be referenced at #163

Checklist:

• [x] Was this PR discussed in a issue? It is recommended to first discuss a new feature into a GitHub issue before opening a PR.
• [x] Add tests to cover the fixed bug(s) or the new introduced feature(s) (if appropriate).
• [x] Update the API documentation is a new function is added or an existing one is deleted.
• [x] Added a news entry.
  • copy news/TEMPLATE.rst to news/my-feature-or-branch.rst) and edit it.

---

[dessygil]

It is almost good to go! but I just have one questions

When I run the test for the parquet file, I am returned with a missing dependency error:

E           A suitable version of pyarrow or fastparquet is required for parquet support.
E           Trying to import the above resulted in these errors:
E            - Missing optional dependency 'pyarrow'. pyarrow is required for parquet support. Use pip or conda to install pyarrow.
E            - Missing optional dependency 'fastparquet'. fastparquet is required for parquet support. Use pip or conda to install fastparquet.

Everything else works fine but I'm not sure what to do here unless I can add the dependency

[hadim]

It is almost good to go! but I just have one questions

When I run the test for the parquet file, I am returned with a missing dependency error:

E           A suitable version of pyarrow or fastparquet is required for parquet support.
E           Trying to import the above resulted in these errors:
E            - Missing optional dependency 'pyarrow'. pyarrow is required for parquet support. Use pip or conda to install pyarrow.
E            - Missing optional dependency 'fastparquet'. fastparquet is required for parquet support. Use pip or conda to install fastparquet.

Everything else works fine but I'm not sure what to do here unless I can add the dependency

You can add pyarrow in the # Optional deps section in the env.yml file. It should be optional within the source code and not fail if a user does not have such dep.

[hadim]

Don't forget to add a NEWS file as well please.

[codecov[bot]]

Codecov Report

Merging #182 (afda6d7) into main (c53455b) will increase coverage by 0.11%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #182      +/-   ##
==========================================
+ Coverage   91.57%   91.69%   +0.11%     
==========================================
  Files          46       46              
  Lines        3622     3661      +39     
==========================================
+ Hits         3317     3357      +40     
+ Misses        305      304       -1     

Flag	Coverage Δ
unittests	91.69% <100.00%> (+0.11%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
datamol/io.py	94.35% <100.00%> (+1.41%)	:arrow_up:

... and 1 file with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[hadim]

@dessygil I just merged a PR in main. Can you rebase or merge main on this PR? You'll have to modify the imports in datamol/__init__.py and follow the new logic (I can help you once you fixed the merge conflict).

[hadim]

Thank you, @dessygil, for your contribution. I went ahead and pushed the latest fixes myself. I will merge once green.