Hover Tooltip doesn't work correctly at bokeh 2.2.1

Community Support
1

I try datetime hover tool tip with Python Program at here( http://docs.bokeh.org/en/1.0.2/docs/user_guide/examples/tools_hover_tooltip_formatting.html ). It worked good at Bokeh1.4.0. However tool tip becomes strange when I upgrade bokeh to version 2.2.1.
Hover tooltip show three data, "date: close: volume: ". date: & close: are changed as follows.
date: 2011-04-04 → 130187520000000
close : $331.83 → $3318300%
(bokeh version : 1.4.0 → 2.2.1)
I guess new version bokeh is something wrong at tooltip format handling.
I hope someone could help me.

Note: I execute following two python command to download required AAPL data.
import bokeh.sampledata
bokeh.sampledata.download()

2

There was an intentional change made at version 2.0 to make some things more consistent:

Please always consult the release notes any time you jump large versions. We publish migration guides specially to help with questions like this.

3

Bryan, thank you very much for your prompt reply.
I changed formatters code as follows and fixed my problem. I will read migration guide carefully next time when I upgrade bokeh.

** How I change python code. **
< before >
formatters={
‘date’ : ‘datetime’,
‘adj close’ : ‘printf’,
},

formatters={
‘@date’ : ‘datetime’,
‘@{adj close}’ : ‘printf’,
},

Thank you again for your very quick & kind support !!

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