Parameter hints not showing up when typing function parameters

[tddschn]

Environment data

• Language Server version: 2021.6.2
• OS and version: darwin x64 (Intel)
• Python version (and distribution if applicable, e.g. Anaconda): python 3.9.5 from conda-forge
• python.analysis.indexing: undefined
• python.analysis.typeCheckingMode: off

Expected behaviour

Showing parameter hints in a popup when typing a function's parameters, without cursor hovering over the function.

Actual behaviour

When using non standard library modules, I had to hover over the function to get the parameter hint.

Screen.Recording.2021-06-21.at.3.44.15.PM.mov

Logs

Python Language Server Log

Background analysis message: setFileOpened
Background analysis message: markFilesDirty
[FG] parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (12ms)
[FG] binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (2ms)
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:6 ...
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/function_base.pyi [fs read 1ms] (4ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/function_base.pyi (1ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/fromnumeric.pyi [fs read 0ms] (13ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/fromnumeric.pyi (1ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/_type_aliases.pyi [fs read 2ms] (2ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/_type_aliases.pyi (0ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/_ufunc_config.pyi [fs read 1ms] (3ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/_ufunc_config.pyi (0ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/numerictypes.pyi [fs read 1ms] (3ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/numerictypes.pyi (0ms)
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:6 [found 6 items] (33ms)
[FG] parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/__init__.py [fs read 0ms] (28ms)
[FG] binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/__init__.py ...
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/__init__.pyi [fs read 0ms] (1ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/core/__init__.pyi (0ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/__init__.pyi [fs read 0ms] (5ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/__init__.pyi (1ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/matrixlib/__init__.pyi [fs read 1ms] (2ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/matrixlib/__init__.pyi (0ms)
[FG] binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/__init__.py (11ms)
[FG] parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/__init__.py [fs read 2ms] (5ms)
[FG] binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/__init__.py ...
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/type_check.py [fs read 1ms] (20ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/type_check.py (1ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/index_tricks.py [fs read 3ms] (16ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/function_base.py [fs read 1ms] (45ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/stride_tricks.py [fs read 2ms] (6ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/twodim_base.py [fs read 1ms] (7ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/ufunclike.py [fs read 1ms] (2ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/histograms.py [fs read 2ms] (11ms)
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[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/polynomial.py [fs read 1ms] (16ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/polynomial.py (5ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/utils.py [fs read 1ms] (13ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/utils.py (4ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/arraysetops.py [fs read 2ms] (9ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/arraysetops.py (1ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/npyio.py [fs read 2ms] (27ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/npyio.py (11ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/arraypad.py [fs read 1ms] (9ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/arraypad.py (2ms)
[FG]   parsing: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/_version.py [fs read 2ms] (4ms)
[FG]   binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/_version.py (4ms)
[FG] binding: /usr/local/Caskroom/miniconda/base/lib/python3.9/site-packages/numpy/lib/__init__.py (275ms)
Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (9ms)
[BG(1)]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
[BG(1)]   checking: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (151ms)
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (161ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis
Background analysis message: setFileOpened
Background analysis message: markFilesDirty
[FG] parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (3ms)
[FG] binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (19ms)
[BG(1)]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (5ms)
[BG(1)]   checking: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (112ms)
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (136ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis
Background analysis message: setFileOpened
Background analysis message: markFilesDirty
[FG] parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (3ms)
[FG] binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (18ms)
[BG(1)]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
[BG(1)]   checking: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (102ms)
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (122ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis
Background analysis message: setFileOpened
Background analysis message: markFilesDirty
[FG] parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (2ms)
[FG] binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:11 [found 172 items] (30ms)
Background analysis message: setFileOpened
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:12 ...
[FG]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (2ms)
[FG]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (2ms)
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:12 [found 14 items] (27ms)
Background analysis message: markFilesDirty
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: setFileOpened
Background analysis message: markFilesDirty
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:13 ...
[FG]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (5ms)
[FG]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
[FG] completion at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py:194:13 [found 2 items] (45ms)
Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (8ms)
[BG(1)]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
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[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (99ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis
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[FG] parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (5ms)
[FG] binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (2ms)
Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (13ms)
[BG(1)]   binding: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (1ms)
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[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (104ms)
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[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis
Background analysis message: setFileOpened
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Background analysis message: analyze
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py ...
[BG(1)]   parsing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (9ms)
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[BG(1)]   checking: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (76ms)
[BG(1)] analyzing: /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/_NotebookConcat_f6496a11803a4f0a8572806def587f62.py (86ms)
Background analysis message: getSemanticTokens full
[BG(1)] getSemanticTokens full at /Users/tscp/testdir/Modern-Python-Standard-Library-Cookbook/pyfiglet.ipynb (0ms)
Background analysis message: resumeAnalysis

Code Snippet / Additional information

import numpy as np
pv0 = np.array([0.  , 0.05, 0.05, 0.05, 0.05, 0.05, 1.05])
np.delete(pv0,  # expecting param hints when typing params

[jakebailey]

Pylance supports this, it's up to the client to display it. In this case, Jupyter notebooks are an entirely different UI and the extension rewires things to make it work. It seems like signature help is one that isn't supported (or, has some bug), so I'll transfer this to their repo.

[DavidKutu]

Sorry for the trouble @tddschn. We do support this and I've been trying but are unable to repro the issue.
What version of the jupyter extension are you using? Our latest stable is v2021.6.999406279

[tddschn]

@DavidKutu That's the version I was using too. :)

[tddschn]

@jakebailey I just tried the snippet in a .py file, and param hints for np.delete still didn't show up, but param hinting do work for some numpy functions like np.hstack on my machine. (Same behavior in python scripts & notebooks)

[DavidKutu]

it might be that its still loading those hints

[tddschn]

Hints for hstack showed up instantly, and they showed up for any functions (or other tokens) instantly if I hover over them.

[DavidKutu]

@jakebailey this looks like the behavior is the same in python files and notebooks. Do you have any insight?

[jakebailey]

I can pull this back to pylance, but likely this is covered under #150; numpy has some odd types for some functions and they will be improving in a future release.

[judej]

Dupe of #150