Pandas 中一维 series, 二维DataFrame, 三维Panel

class pandas.Panel(data=None, items=None, major_axis=None, minor_axis=None, copy=False, dtype=None)

Represents wide format panel data, stored as 3-dimensional array

Parameters:	data : ndarray (items x major x minor), or dict of DataFrames items : Index or array-like axis=0 major_axis : Index or array-like axis=1 minor_axis : Index or array-like axis=2 dtype : dtype, default None Data type to force, otherwise infer copy : boolean, default False Copy data from inputs. Only affects DataFrame / 2d ndarray input