v6.1.0 breaks Pylance highlighting and produces errors

[IlanCosman]

Code:

import plotly.graph_objects as go

fig = go.Figure(
    data=go.Scatter(x=[1, 2, 3], y=[4, 5, 6], mode="lines+markers", name="My Line"),
    layout=go.Layout(
        title=go.layout.Title(text="My Line Chart"),
    ),
)

Expected highlighting / lack of errors (from v6.0.1):

Broken highlight with errors (from v6.1.0):

The error is:

Cannot access attribute "Title" for class "type[FigureWidget]"
  Attribute "Title" is unknownPylance[reportAttributeAccessIssue]

The code of course still runs just fine. I'm using the latest version of VSCode and Pylance at time of writing.

[kszlim]

I'm experiencing this too. I believe everything under plotly.graph_objects is broken in terms of typechecking.

[emilykl]

@IlanCosman @kszlim Thank you for reporting. We've identified the issue and are working on a fix.

We're able to reproduce the broken highlighting (see screenshot below) but can't reproduce the red underline / Cannot access attribute "Title" error -- @kszlim are you seeing that error as well? Is it coming from Pylance or another tool?

[kszlim]

I'm seeing something similar to what you're seeing on vscode with pylance.

[junjiecai]

Here is what I see in my Cursor for plotly v6.1.0

If I hover on go.Figure or go.Bar, pylance will complain about it

minimal code to reproduce

    from plotly import graph_objects as go
    fig = go.Figure()
    fig.add_trace(
        go.Bar(
            x=[1,2,3],
            y=[1,2,3],
        )
    )

(Environment):
Plotly Version: 6.1.0
Python Version: 3.13.2
Operating System: macOS (Seqonia 15.2)

IDE:
Cursor:Version: 0.50.5(VSCode Version: 1.96.2)