8000 [Bug]: pylance (in vscode) detect error that should not detect in matplotlib (3d) · Issue #27482 · matplotlib/matplotlib · GitHub
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[Bug]: pylance (in vscode) detect error that should not detect in matplotlib (3d) #27482

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victorballester7 opened this issue Dec 9, 2023 · 2 comments
Closed

[Bug]: pylance (in vscode) detect error that should not detect in matplotlib (3d) #27482

victorballester7 opened this issue Dec 9, 2023 · 2 comments
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status: duplicate topic: mplot3d

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@victorballester7
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Bug summary

Hi everyone! I'm in VSCode and I have the extension from Microsoft for Python. I have the following error. Consider the following code without errors (a priori).
I am getting the following error from Pylance:

Cannot access member "bar3d" for type "Axes" Member "bar3d" is unknown

Cannot access member "set_zlabel" for type "Axes" Member "set_zlabel" is unknown

It seems like doing
ax = cast(Axes3D, fig.add_subplot(projection='3d'))
solves the problem, but I would like to avoid that, as it is unnatural.
It seems that is related to: the stub for add_subplot would likely need an overload for the literal of projection='3d' (check microsoft/pyright#6690 (comment))

Code for reproduction

import matplotlib.pyplot as plt
import numpy as np

x = [74, 74, 74, 74, 74, 74, 74, 74, 192, 74]
y = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
z = np.zeros(10)
dx = np.ones(10)*10
dy = np.ones(10)
dz = [1455, 1219, 1240, 1338, 1276, 1298, 1292, 1157, 486, 1388]

fig = plt.figure()
ax = fig.add_subplot(projection='3d')

bar3d = ax.bar3d(x, y, z, dx, dy, dz, color='C0')

ax.set_title("Data Analysis ")
ax.set_xlabel('x')
ax.set_ylabel('y')
ax.set_zlabel('z')

plt.show()

Actual outcome

Code with errors highlighted.

Expected outcome

Code without errors

Additional information

No response

Operating system

Arch

Matplotlib Version

3.8.1-1

Matplotlib Backend

No response

Python version

3.11.6

Jupyter version

No response

Installation

None
@rcomer
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rcomer commented Dec 9, 2023

I believe this is ultimately the same problem as discussed in #27455, and in particular the advice at #27455 (comment) also applies here. That is, your existing use of cast is likely the best option, at least for now.

@victorballester7
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Ok, thank you! I close the issue!

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@rcomer @victorballester7
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