matplotlib: Pylance does'nt show autocomplete of modules in matplotlib

[Trid-collab]

Issue Type: Bug

import matplotlib.pyplot as plt
plt.style.use("seaborn-darkgrid") <----- when we plt. --- the style option does not show up in the autocomplete option.

import pandas as pd
pd.set_option <----- the set_option does not show up when type pd. in autocomplete

Extension version: 2020.6.1
VS Code version: Code 1.46.1 (cd9ea6488829f560dc949a8b2fb789f3cdc05f5d, 2020-06-17T21:13:20.174Z)
OS version: Windows_NT x64 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz (4 x 2295)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off_ok webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	7.88GB (0.96GB free)
Process Argv	.
Screen Reader	no
VM	0%

[gramster]

Thanks; we are missing the option APIs; will add them in next release.

[jakebailey]

As for pyplot, the documentation does not list pyplot.style: https://matplotlib.org/api/pyplot_api.html

This might be exported by way of it importing something else and a variable existing, but I'm not sure that it's actually a part of pyplot's declared API (which is why I didn't add it to the stub). I think we'll have to check other projects to see if this is a common usage.

[CatNofishing]

It is good to add api about pandas and matplotlib ，This can enhance the programming experience of data science.

[Trid-collab]

An update- found now that the below option works in the Jupyter Notebook Option when I first run the notebook in VS Code , but does not show in when writing .py file. It would be good to have it in the normal py editor option as well

import matplotlib.pyplot as plt
plt.style.use("seaborn-darkgrid") <----- when we plt. --- the style option does not show up in the autocomplete option.

[jakebailey]

Correct; the notebook is working with the live code, but these stubs haven't been updated/fixed yet to include these methods (and that's what's used in non-live code, i.e. statically analyzed files).

I'm still not super convinced that this undocumented value should be exposed, in any case, but the stubs need to be updated in general.

[ain-soph]

Add one thing. matplotlib.cm.get_cmap is not well declared in stubs cm.pyi. There won't be any linting for from matplotlib.cm import get_cmap. So it is for matplotlib.colors.Colormap.
Actually it seems to be a quite short file and I guess a lot of things are missing? I think they are files for accelerating linting, and everything seems to work after I delete cm.pyi and colors.pyi. So maybe just don't add them if they are incomplete.

[jakebailey]

This issue has been fixed in version 2021.3.0, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202130-3-march-2021