Comments (3)
@ned2 appreciate the confirmation can stop trying to bodge it now 😆
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Unfortunately patterns involving running two Dash instances within the same Python process are no longer supported by Dash. This is because there's a few different bits of global state that Dash uses to track things like callbacks defined with dash.callback
(as opposed to app.callback
) and, as you've bumped into, state used by the Pages feature. These have been introduced over time starting some versions of Dash ago.
Here's a post in another repo where I took a stab at identifying all the global state that you could run afoul of trying to run multiple Dash instances in the one process. if you're careful, you could get some use cases to work by avoiding features that make use of them, but in general this is going to be risky, so might be better to fall back to another way of what you're trying to achieve.
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@ned2 do you have a recommended approach to fixing this problem?
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