Add_vline with annotation and datetime as x-axis

I’m using datetime objects as x-axis values, no problem there.
I can even add a vline with a datetime object as x value, no problem either.

But when I add an annotation_text attribute, I get the following error:

fig.add_vline(x=Startzeit, line_width=1, line_dash=“dash”, line_color=“black”, annotation_text = “test”)

TypeError: unsupported operand type(s) for +: ‘int’ and ‘datetime.datetime’

Is this a bug or just not supported, or am I doing something wrong?


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Hi taubenschach, I recently ran into the same issue. This seems to be a bug that is not fixed yet. A possible workaround is suggested here