def str_endswith(arr, pat, na=np.nan):
f = lambda x: x.endswith(pat)<EOL>return _na_map(f, arr, na, dtype=bool)<EOL>
Test if the end of each string element matches a pattern.

Equivalent to :meth:`str.endswith`.

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 end of each string element.

See Also
--------
str.endswith : Python standard library string method.
Series.str.startswith : Same as endswith, but tests the start 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.endswith('t')
0     True
1    False
2    False
3      NaN
dtype: object

Specifying `na` to be `False` instead of `NaN`.

>>> s.str.endswith('t', na=False)
0     True
1    False
2    False
3    False
dtype: bool