Pandas str.split without stripping split pattern
You could split by using a positive look ahead. So the split point will be the point just before the postivie look ahead expression.
import pandas as pdserie = pd.Series(['this#is#a#test', 'another#test'])print(serie.str.split('(?=#)', expand=True))OUTPUT
0 1 2 30 this #is #a #test1 another #test None None
Just simply add it at each line:
In [1]: import pandas as pdIn [2]: serie = pd.Series(['this#is#a#test', 'another#test'])In [3]: serie.str.split('#', expand=True) + '#'Out[3]: 0 1 2 30 this# is# a# test#1 another# test# NaN NaNIn [4]: '#' + serie.str.split('#', expand=True)Out[4]: 0 1 2 30 #this #is #a #test1 #another #test NaN NaN