split() got an unexpected keyword argument 'expand'

问题

In python2 i could go from this pandas series

        0
0    [a,b,c]

with s.str.split(',',expand=True) into this:

  0 1 2

0 a b c

and now (ipython3) i cant, because lack of "expand" argument. How I can do it in other way?

回答1:

You should check your environment's pandas version. According to the pandas docs, expand was recently added so it looks like you regressed your version somehow.

expand : bool, default False If True, return DataFrame/MultiIndex expanding dimensionality. If False, return Series/Index. New in version 0.16.1.

Based on the old docs it looks like you can do the same thing by specifying the return_type='frame' parameter.

来源：https://stackoverflow.com/questions/35567162/split-got-an-unexpected-keyword-argument-expand