def between(self, left, right, inclusive=True):
if inclusive:<EOL><INDENT>lmask = self >= left<EOL>rmask = self <= right<EOL><DEDENT>else:<EOL><INDENT>lmask = self > left<EOL>rmask = self < right<EOL><DEDENT>return lmask & rmask<EOL>
Return boolean Series equivalent to left <= series <= right.

This function returns a boolean vector containing `True` wherever the
corresponding Series element is between the boundary values `left` and
`right`. NA values are treated as `False`.

Parameters
----------
left : scalar
    Left boundary.
right : scalar
    Right boundary.
inclusive : bool, default True
    Include boundaries.

Returns
-------
Series
    Series representing whether each element is between left and
    right (inclusive).

See Also
--------
Series.gt : Greater than of series and other.
Series.lt : Less than of series and other.

Notes
-----
This function is equivalent to ``(left <= ser) & (ser <= right)``

Examples
--------
>>> s = pd.Series([2, 0, 4, 8, np.nan])

Boundary values are included by default:

>>> s.between(1, 4)
0     True
1    False
2     True
3    False
4    False
dtype: bool

With `inclusive` set to ``False`` boundary values are excluded:

>>> s.between(1, 4, inclusive=False)
0     True
1    False
2    False
3    False
4    False
dtype: bool

`left` and `right` can be any scalar value:

>>> s = pd.Series(['Alice', 'Bob', 'Carol', 'Eve'])
>>> s.between('Anna', 'Daniel')
0    False
1     True
2     True
3    False
dtype: bool