dask.dataframe.Series.str.find

dask.dataframe.Series.str.find¶

dataframe.Series.str.find(sub, start: int = 0, end=None)¶

Return lowest indexes in each strings in the Series/Index.

This docstring was copied from pandas.core.strings.accessor.StringMethods.find.

Some inconsistencies with the Dask version may exist.

Each of returned indexes corresponds to the position where the substring is fully contained between [start:end]. Return -1 on failure. Equivalent to standard str.find().

Parameters

substr: Substring being searched.
startint: Left edge index.
endint: Right edge index.

Returns

Series or Index of int.

See also

rfind: Return highest indexes in each strings.

Examples

For Series.str.find:

>>> ser = pd.Series(["cow_", "duck_", "do_ve"])  
>>> ser.str.find("_")  
0   3
1   4
2   2
dtype: int64

For Series.str.rfind:

>>> ser = pd.Series(["_cow_", "duck_", "do_v_e"])  
>>> ser.str.rfind("_")  
0   4
1   4
2   4
dtype: int64

dask.dataframe.Series.str.extractall

dask.dataframe.Series.str.findall