pandas.Series.str.index — pandas 2.2.3 documentation (original) (raw)

Series.str.index(sub, start=0, end=None)[source]#

Return lowest indexes in each string in Series/Index.

Each of the returned indexes corresponds to the position 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 standardstr.index.

Parameters:

substr

Substring being searched.

startint

Left edge index.

endint

Right edge index.

Returns:

Series or Index of object

See also

rindex

Return highest indexes in each strings.

Examples

For Series.str.index:

ser = pd.Series(["horse", "eagle", "donkey"]) ser.str.index("e") 0 4 1 0 2 4 dtype: int64

For Series.str.rindex:

ser = pd.Series(["Deer", "eagle", "Sheep"]) ser.str.rindex("e") 0 2 1 4 2 3 dtype: int64