read_excel with sheetname=None or sheetname=[0,1,”Sheet5”] should preserve sheets order

[s-celles]

Hello,

I noticed in http://pandas.pydata.org/pandas-docs/stable/generated/pandas.read_excel.html#pandas.read_excel
that read_excel can have a parameter sheetnameset to None or a to a list

In such a case a dictionary of DataFrame is returned.

Maybe it should output an OrderedDict of DataFrame to preserve sheets order.

Kind regards

[s-celles]

Thanks @jorisvandenbossche for merging