cudf.core.column.string.StringMethods.startswith

StringMethods.startswith(pat: Union[str, Sequence]) → SeriesOrIndex

Test if the start of each string element matches a pattern.

Equivalent to str.startswith().

Parameters

patstr or list-like

If str is an str, evaluates whether each string of series starts with pat. If pat is a list-like, evaluates whether self[i] starts with pat[i]. Regular expressions are not accepted.

Returns

Series or Index of bool

A Series of booleans indicating whether the given pattern matches the start of each string element.

See also

endswith

Same as startswith, but tests the end of string.

contains

Tests if string element contains a pattern.

Examples

>>> import cudf
>>> s = cudf.Series(['bat', 'Bear', 'cat', None])
>>> s
0     bat
1    Bear
2     cat
3    <NA>
dtype: object
>>> s.str.startswith('b')
0     True
1    False
2    False
3     <NA>
dtype: bool