There's no 'range' parameter in series.plot.hist, but how this work?

Question

There's no range argument in pandas.Series.plot.hist or pandas.Series.plot. But the code below works. How does it work?

#wnba is Dataframe, so wnba['PTS'] is series.
wnba['PTS'].plot.hist(range = (1,600), bins = 3)

[`**kwds`](https://stackoverflow.com/questions/1769403/what-is-the-purpose-and-use-of-kwargs) — Adelin, Feb 11 '19 at 10:25
@Adelin That's why I also linked Series.plot. There's no range in Series.plot, too. — Jinwoo Lee, Feb 11 '19 at 10:29
The documentation states `**kwds : keywords, Options to pass to matplotlib plotting method`. Meaning, that if this calls `matplotlib.pyplot.hist`, `range` will be passed to it. — ImportanceOfBeingErnest, Feb 11 '19 at 10:37

score 0 · Accepted Answer · answered Feb 11 '19 at 10:56

plot.hist takes **kwds so, already, however you call it (with whatever keyword args), it'll have a correct syntax.

Semantically:

hist calls self by passing kind='hist' argument,
which means self.__call__,
which, in turn calls plot_series that establishes the ax layer through the _get_ax_layer method,
then _plot is called with this ax and with the kind='hist' argument
which, eventually, means that the HistPlot class will be used
that finally extracts the range kwarg via range=self.kwds.get('range', None)

It's all a matter of patiently following the breadcrumbs.

1 Answers1