问单个bokeh服务器不同的会话显示不同的流数据，如何解决？

EN

from bokeh.server.server import Server
from bokeh.models import ColumnDataSource, Label
from bokeh.plotting import figure
from bokeh.layouts import column
import numpy as np
import datetime as dt
from functools import partial
import time


# this will be replaced with the real data collector in the end
def f_emitter(p=0.1):
    v = np.random.rand()
    return (dt.datetime.now(), 0. if v>p else v)


def make_document(doc, functions, labels):
    def update():
        for index, func in enumerate(functions):
            data = func()
            sources[index].stream(new_data=dict(time=[data[0]], data=[data[1]]), rollover=1000)
            annotations[index].text = f'{data[1]: .3f}'

    sources = [ColumnDataSource(dict(time=[], data=[])) for _ in range(len(functions))]
    figs = []
    annotations = []
    for i in range(len(functions)):
        figs.append(figure(x_axis_type='datetime',
                           y_axis_label=labels[i], toolbar_location=None,
                           active_drag=None, active_scroll=None))
        figs[i].line(x='time', y='data', source=sources[i])
        annotations.append(Label(x=10, y=10, text='', text_font_size='40px', text_color='black',
                                 x_units='screen', y_units='screen', background_fill_color='white'))
        figs[i].add_layout(annotations[i])
        # print(figs[i].plot_height)

    doc.add_root(column([fig for fig in figs], sizing_mode='stretch_both'))
    doc.add_periodic_callback(callback=update, period_milliseconds=100)


if __name__ == '__main__':
    # list of functions and labels to feed into the scope
    functions = [f_emitter]
    labels = ['emitter']

    server = Server({'/': partial(make_document, functions=functions, labels=labels)})
    server.start()
    server.io_loop.add_callback(server.show, "/")
    try:
        server.io_loop.start()
    except KeyboardInterrupt:
        print('keyboard interruption')