python-3.x - 从 Bokeh Multiselect 获取字符串值

Question

我的目标是创建一个 Bokeh 小部件框，您可以使用它来为表单提供输入，但是唯一允许我将输入从 Bokeh 的 javascript 端返回到 Python 变量的小部件是 RadioButtonGroups。否则，Multiselect、AutocompleteInput 和其他只能以整数形式返回我的输入。这是在 Jupyter NB 中使用 Python 和 Bokeh 0.13.0 完成的，如果您碰巧有任何问题或我遗漏了任何内容，请随时告诉我。

请看下面的代码：

import os, time, sys
from bokeh.layouts import widgetbox
from bokeh.models.widgets import RadioButtonGroup, Button, TextInput
from bokeh.models.widgets.inputs import MultiSelect
from bokeh.models.widgets import AutocompleteInput
from bokeh.models.callbacks import CustomJS
from bokeh.io import output_notebook, show
from bokeh.models import ColumnDataSource
from bokeh.models.widgets.markups import Div
from bokeh.resources import INLINE
output_notebook(resources=INLINE)


ipies=[str(i.strip('.ipynb')) for i in os.listdir() if i.endswith('.ipynb')]
minutes=0
hours=0
days=0
months=0
daysmonth=0
days=0

minute_options=[str(i) for i in range(1,60)]
minute_options.append("*")
minute_callback = CustomJS(args=dict(a=minute_options), code="""   
    var options=a;
    console.log(options[parseInt(cb_obj.active)]);
    var ind=options[parseInt(cb_obj.active)];
    IPython.notebook.kernel.execute('minutes='+ind+'');
""")
minute_rbg = RadioButtonGroup(
        labels=minute_options, callback=minute_callback, active=len(minute_options)-1)
min_title=Div(text="Which minute on the hour, * for every minute")

hour_options=[str(i) for i in range(24)]
hour_options.append("*")
hour_callback = CustomJS(args=dict(a=hour_options), code="""   
    var options=a;
    console.log(options[parseInt(cb_obj.active)]);
    var ind=options[parseInt(cb_obj.active)];
    IPython.notebook.kernel.execute('hours='+ind+'');
""")
hour_rbg = RadioButtonGroup(
        labels=hour_options,callback=hour_callback,active=len(hour_options)-1)
hour_title=Div(text="Which hour in a day, * for every hour")

day_month_options=[str(i) for i in range(1,32)]
day_month_options.append("*")
day_month_callback = CustomJS(args=dict(a=day_month_options), code="""   
    var options=a;
    console.log(options[parseInt(cb_obj.active)]);
    var ind=options[parseInt(cb_obj.active)];
    IPython.notebook.kernel.execute('daysmonth='+ind+'');
""")
day_month_rbg = RadioButtonGroup(
        labels=day_month_options,callback=day_month_callback,active=len(day_month_options)-1)
day_month_title=Div(text="Which day in a month, * for every day of the month")

month_options=[str(i) for i in range(1,13)]
month_options.append("*")
month_callback = CustomJS(args=dict(a=month_options), code="""   
    var options=a;
    console.log(options[parseInt(cb_obj.active)]);
    var ind=options[parseInt(cb_obj.active)];
    IPython.notebook.kernel.execute('months='+ind+'');
""")
month_rbg = RadioButtonGroup(
        labels=month_options, callback=month_callback,active=len(month_options)-1)
month_title=Div(text="Which month in a year, * for every month")

day_week_options=[str(i) for i in range(7)]
day_week_options.append("*")
day_week_callback = CustomJS(args=dict(a=day_week_options), code="""   
    var options=a;
    console.log(options[parseInt(cb_obj.active)]);
    var ind=options[parseInt(cb_obj.active)];
    IPython.notebook.kernel.execute('days='+ind+'');
""")
day_week_rbg = RadioButtonGroup(
        labels=day_week_options, callback=day_week_callback, active=len(day_week_options)-1)
days_week_title=Div(text="Which day in a week, * for every day of the week")
import pandas as pd
ipies_pd = pd.DataFrame({"a":ipies})
#Selection source: IPIES CDS
cds = ColumnDataSource(data=ipies_pd)

#Selection source: autocompleteinput & multiselect widgets
selection_callback = CustomJS(args=dict(source=cds), code="""
    // THIS CALLBACK ONLY BRINGS BACK SELECTIONS IF THEY ARE INTEGERS
    var cbobj = cb_obj.value;
    IPython.notebook.kernel.execute("auto_c_value = "\"+ cbobj + "\");
    """)
ms = MultiSelect(title="power", callback=selection_callback, options=ipies)
auto_c=AutocompleteInput(completions=ipies, height=100, callback=selection_callback)


button_callback = CustomJS(code="""
    var cur_index = IPython.notebook.get_selected_index()+1;
    var end_index=IPython.notebook.ncells();
    IPython.notebook.execute_cell_range(IPython.notebook.get_selected_index()+1, IPython.notebook.ncells());
""")
button = Button(label="button~!", button_type="primary", callback=button_callback)

w_box = widgetbox(min_title, minute_rbg, hour_title, hour_rbg, day_month_title, day_month_rbg,
                 month_title, month_rbg,days_week_title, day_week_rbg, button,
                  ms, auto_c, width=800, sizing_mode='scale_both')

show(w_box)

标签： python-3.xjupyterbokeh