Plot dataframe with bokeh

plot.py

from bokeh.models import ColumnDataSource
from bokeh.palettes import viridis
from bokeh.io import output_notebook, show

def plot(df, title='Prices'):
    p = figure(title=title, plot_height=700, plot_width=1300)
    output_notebook()
    source = ColumnDataSource(df)
    positions = df.columns
    colors = viridis(len(positions))
    i = 0
    for pos in positions:
        p.line(source=source,x='time', y=pos, color=colors[i], line_width=3, legend="- "+pos)
        i+=1
    show(p, notebook_handle=True)