Exposing plot at top level

[jsignell]

import numpy as np
import pandas as pd

pd.options.plotting.backend = 'hvplot'
data = np.random.normal(size=[50, 2])
df = pd.DataFrame(data, columns=['x', 'y'])

df.plot(x='x', y='y')

[jbednar]

How does that example depend on having plot at the top level?

[jsignell]

This is from the gitter convo

[jsignell]

There are two ways to implement backends for pd.options.plotting.backend : entrypoints or exposing a top level plot function in the module.

[jbednar]

To summarize the conversation from gitter for posterity, the issue is that pd.options.plotting.backend = 'holoviews' currently works, via the entry point mechanism, but pd.options.plotting.backend = 'hvplot' does not. With this PR, pd.options.plotting.backend = 'hvplot' now works, via the top-level plot function method.