Archived discussions · Captured October 28, 2026

Bokeh: 'generator' object has no attribute 'tooltips'

Gopal_KumarApr 25, 2017 #1

import bokeh.plotting as bp
from bokeh.plotting import figure
from bokeh.models import HoverTool
bp.output_notebook()
row_selector = np.where(users_per_subreddit>5)
tbf = bp.figure(plot_width=900, plot_height=700, title=“Subreddit Map by Most Informative Dimensions”,
x_axis_label = “Dimension 0”,
y_axis_label = “Dimension 1”,
tools=“pan,wheel_zoom,box_zoom,reset,hover,previewsave”,
min_border=1)
tbf.scatter(
x = embedded_coords[:,0][row_selector],
y = embedded_coords[:,1][row_selector],
radius= np.log2(users_per_subreddit[row_selector])/6000,
source=bp.ColumnDataSource({“subreddit”: subreddits[row_selector]})
).select(HoverTool).tooltips = {"/r/":"@subreddit"}

tbf.show()

This snippet is giving the following error:

AttributeError                            Traceback (most recent call last)
<ipython-input-14-51346c59c121> in <module>()
      9     radius= np.log2(users_per_subreddit[row_selector])/6000,
     10     source=bp.ColumnDataSource({"subreddit": subreddits[row_selector]})
---> 11 ).select(HoverTool).tooltips = {"/r/":"@subreddit"}
     12
     13 # s1 = fig.scatter(x=x,y=y1,color='#0000ff',size=10,legend='sine')

AttributeError: 'generator' object has no attribute 'tooltips'

What to do???

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Tyler_NickersonApr 28, 2017 #2

Bokeh isn’t designed to support the kind of chaining you are trying to do. figure.scatter() doesn’t return the figure object but the glyph renderer that is created. So by chaining this with select you are trying to find a HoverTool within the returned renderer. I would suggest looking through this section of the user guide, which gives some good examples on how to add custom hover tools to plots.

···

On Tue, Apr 25, 2017 at 10:49 AM, Gopal Kumar gopalkmr19@gmail.com wrote:

import bokeh.plotting as bp
from bokeh.plotting import figure
from bokeh.models import HoverTool
bp.output_notebook()
row_selector = np.where(users_per_subreddit>5)
tbf = bp.figure(plot_width=900, plot_height=700, title=“Subreddit Map by Most Informative Dimensions”,
x_axis_label = “Dimension 0”,
y_axis_label = “Dimension 1”,
tools=“pan,wheel_zoom,box_zoom,reset,hover,previewsave”,
min_border=1)
tbf.scatter(
x = embedded_coords[:,0][row_selector],
y = embedded_coords[:,1][row_selector],
radius= np.log2(users_per_subreddit[row_selector])/6000,
source=bp.ColumnDataSource({“subreddit”: subreddits[row_selector]})
).select(HoverTool).tooltips = {“/r/”:“@subreddit”}

tbf.show()

``

This snippet is giving the following error:

AttributeError                            Traceback (most recent call last)
<ipython-input-14-51346c59c121> in <module>()
      9     radius= np.log2(users_per_subreddit[row_selector])/6000,
     10     source=bp.ColumnDataSource({"subreddit": subreddits[row_selector]})
---> 11 ).select(HoverTool).tooltips = {"/r/":"@subreddit"}
     12
     13 # s1 = fig.scatter(x=x,y=y1,color='#0000ff',size=10,legend='sine')

AttributeError: 'generator' object has no attribute 'tooltips'

What to do???

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BryanApr 28, 2017 #3

It's probably also worth mentioning that .select returns a generator. If you want to get a real list out of it, you'd need to do "list(obj.select(...))" or else iterate over the generator in a loop. If you just want to find the "first" object back, there is also a .select_one(...) method that will return an actual object, not a generator.

Thanks,

Bryan

···

On Apr 27, 2017, at 22:52, Tyler Nickerson <tylerjnickerson@gmail.com> wrote:

Bokeh isn't designed to support the kind of chaining you are trying to do. figure.scatter() doesn't return the figure object but the glyph renderer that is created. So by chaining this with select you are trying to find a HoverTool within the returned renderer. I would suggest looking through this section of the user guide, which gives some good examples on how to add custom hover tools to plots.

On Tue, Apr 25, 2017 at 10:49 AM, Gopal Kumar <gopalkmr19@gmail.com> wrote:
import bokeh.plotting as bp
from bokeh.plotting import figure
from bokeh.models import HoverTool
bp.output_notebook()
row_selector = np.where(users_per_subreddit>5)
tbf = bp.figure(plot_width=900, plot_height=700, title="Subreddit Map by Most Informative Dimensions",
       x_axis_label = "Dimension 0",
       y_axis_label = "Dimension 1",
       tools="pan,wheel_zoom,box_zoom,reset,hover,previewsave",
       min_border=1)
tbf.scatter(
    x = embedded_coords[:,0][row_selector],
    y = embedded_coords[:,1][row_selector],
    radius= np.log2(users_per_subreddit[row_selector])/6000,
    source=bp.ColumnDataSource({"subreddit": subreddits[row_selector]})
).select(HoverTool).tooltips = {"/r/":"@subreddit"}

tbf.show()

This snippet is giving the following error:

AttributeError
                            Traceback (most recent call last)

<ipython-input-14-51346c59c121> in <module>()
      9 radius= np.log2(users_per_subreddit[row_selector])/6000,
     10 source=bp.ColumnDataSource({"subreddit": subreddits[row_selector]})
---> 11
).select(HoverTool).tooltips = {"/r/":"@subreddit"}

     12

     13 # s1 = fig.scatter(x=x,y=y1,color='#0000ff',size=10,legend='sine')

AttributeError: 'generator' object has no attribute 'tooltips'

What to do???

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systemJul 21, 2021 #4

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