pandas.Series.str.index

Series.str.index(sub, start=0, end=None)

Return lowest indexes in each strings where the substring is fully contained between [start:end]. This is the same as str.find except instead of returning -1, it raises a ValueError when the substring is not found. Equivalent to standard str.index.

Parameters:

sub : str

Substring being searched

start : int

Left edge index

end : int

Right edge index

Returns:

found : Series/Index of objects