pandas.Series.str.startswith¶
-
Series.str.
startswith
(pat, na=nan)[source]¶ Test if the start of each string element matches a pattern.
Equivalent to
str.startswith()
.- Parameters
pat : str
Character sequence. Regular expressions are not accepted.
na : object, default NaN
Object shown if element tested is not a string.
- Returns
Series or Index of bool
A Series of booleans indicating whether the given pattern matches the start of each string element.
See also
str.startswith
Python standard library string method.
Series.str.endswith
Same as startswith, but tests the end of string.
Series.str.contains
Tests if string element contains a pattern.
Examples
>>> s = pd.Series(['bat', 'Bear', 'cat', np.nan]) >>> s 0 bat 1 Bear 2 cat 3 NaN dtype: object
>>> s.str.startswith('b') 0 True 1 False 2 False 3 NaN dtype: object
Specifying na to be False instead of NaN.
>>> s.str.startswith('b', na=False) 0 True 1 False 2 False 3 False dtype: bool