DataFrame.hist(data, column=None, by=None, grid=True, xlabelsize=None, xrot=None, ylabelsize=None, yrot=None,ax=None, sharex=False, sharey=False, figsize=None, layout=None, bins=10, **kwds)
data : DataFrame
column : string or sequence 字符串或序列
by : object, optional
If passed, then used to form histograms（直方图） for separate groups
grid : boolean, default True 网格线，默认为使用
xlabelsize : int, default None
If specified changes the x-axis label size
xrot : float, default None
rotation of x axis labels
ylabelsize : int, default None
If specified changes the y-axis label size
yrot : float, default None
rotation of y axis labels
ax : 轴对象，默认为空
sharex : boolean, default True if ax is None else False
In case subplots=True, share x axis and set some x axis labels to invisible; defaults to True if ax is None otherwise False if an ax is passed in; Be aware, that passing in both an ax and sharex=True will alter all x axis labels for all subplots in a figure!
sharey : boolean, default False
In case subplots=True, share y axis and set some y axis labels to invisible
figsize : tuple
The size of the figure to create in inches by default
layout : tuple, optional
Tuple of (rows, columns) for the layout of the histograms
bins : integer, default 10
直方图（柱状图）分箱数目，默认为10
kwds : other plotting keyword arguments
To be passed to hist function