CLN: Rename private variables to inclusive (#47655)

* CLN: Rename private variables from closed to inclusive

* Rename variables in dtypes too

* Fix tests

pandas/_libs/interval.pyi

@@ -17,7 +17,7 @@ from pandas._typing import (
     Timestamp,
 )
 
-VALID_CLOSED: frozenset[str]
+VALID_INCLUSIVE: frozenset[str]
 
 _OrderableScalarT = TypeVar("_OrderableScalarT", int, float)
 _OrderableTimesT = TypeVar("_OrderableTimesT", Timestamp, Timedelta)
@@ -52,7 +52,9 @@ class IntervalMixin:
     def open_right(self) -> bool: ...
     @property
     def is_empty(self) -> bool: ...
-    def _check_closed_matches(self, other: IntervalMixin, name: str = ...) -> None: ...
+    def _check_inclusive_matches(
+        self, other: IntervalMixin, name: str = ...
+    ) -> None: ...
 
 def _warning_interval(
     inclusive, closed
@@ -150,7 +152,7 @@ class Interval(IntervalMixin, Generic[_OrderableT]):
     def overlaps(self: Interval[_OrderableT], other: Interval[_OrderableT]) -> bool: ...
 
 def intervals_to_interval_bounds(
-    intervals: np.ndarray, validate_closed: bool = ...
+    intervals: np.ndarray, validate_inclusive: bool = ...
 ) -> tuple[np.ndarray, np.ndarray, IntervalInclusiveType]: ...
 
 class IntervalTree(IntervalMixin):

pandas/_libs/interval.pyx

@@ -56,7 +56,7 @@ from pandas._libs.tslibs.util cimport (
     is_timedelta64_object,
 )
 
-VALID_CLOSED = frozenset(['both', 'neither', 'left', 'right'])
+VALID_INCLUSIVE = frozenset(['both', 'neither', 'left', 'right'])
 
 
 cdef class IntervalMixin:
@@ -85,7 +85,7 @@ cdef class IntervalMixin:
         Returns
         -------
         bool
-            True if the Interval is closed on the left-side.
+            True if the Interval is closed on the right-side.
         """
         return self.inclusive in ('right', 'both')
 
@@ -99,7 +99,7 @@ cdef class IntervalMixin:
         Returns
         -------
         bool
-            True if the Interval is closed on the left-side.
+            True if the Interval is not closed on the left-side.
         """
         return not self.closed_left
 
@@ -113,7 +113,7 @@ cdef class IntervalMixin:
         Returns
         -------
         bool
-            True if the Interval is closed on the left-side.
+            True if the Interval is not closed on the right-side.
         """
         return not self.closed_right
 
@@ -188,7 +188,7 @@ cdef class IntervalMixin:
         """
         return (self.right == self.left) & (self.inclusive != 'both')
 
-    def _check_closed_matches(self, other, name='other'):
+    def _check_inclusive_matches(self, other, name='other'):
         """
         Check if the inclusive attribute of `other` matches.
 
@@ -203,7 +203,7 @@ cdef class IntervalMixin:
         Raises
         ------
         ValueError
-            When `other` is not closed exactly the same as self.
+            When `other` is not inclusive exactly the same as self.
         """
         if self.inclusive != other.inclusive:
             raise ValueError(f"'{name}.inclusive' is {repr(other.inclusive)}, "
@@ -259,14 +259,14 @@ cdef class Interval(IntervalMixin):
         .. deprecated:: 1.5.0
 
     inclusive : {'both', 'neither', 'left', 'right'}, default 'both'
-        Whether the interval is closed on the left-side, right-side, both or
+        Whether the interval is inclusive on the left-side, right-side, both or
         neither. See the Notes for more detailed explanation.
 
         .. versionadded:: 1.5.0
 
     See Also
     --------
-    IntervalIndex : An Index of Interval objects that are all closed on the
+    IntervalIndex : An Index of Interval objects that are all inclusive on the
         same side.
     cut : Convert continuous data into discrete bins (Categorical
         of Interval objects).
@@ -279,13 +279,13 @@ cdef class Interval(IntervalMixin):
     The parameters `left` and `right` must be from the same type, you must be
     able to compare them and they must satisfy ``left <= right``.
 
-    A closed interval (in mathematics denoted by square brackets) contains
-    its endpoints, i.e. the closed interval ``[0, 5]`` is characterized by the
+    A inclusive interval (in mathematics denoted by square brackets) contains
+    its endpoints, i.e. the inclusive interval ``[0, 5]`` is characterized by the
     conditions ``0 <= x <= 5``. This is what ``inclusive='both'`` stands for.
     An open interval (in mathematics denoted by parentheses) does not contain
     its endpoints, i.e. the open interval ``(0, 5)`` is characterized by the
     conditions ``0 < x < 5``. This is what ``inclusive='neither'`` stands for.
-    Intervals can also be half-open or half-closed, i.e. ``[0, 5)`` is
+    Intervals can also be half-open or half-inclusive, i.e. ``[0, 5)`` is
     described by ``0 <= x < 5`` (``inclusive='left'``) and ``(0, 5]`` is
     described by ``0 < x <= 5`` (``inclusive='right'``).
 
@@ -352,7 +352,7 @@ cdef class Interval(IntervalMixin):
 
     cdef readonly str inclusive
     """
-    Whether the interval is closed on the left-side, right-side, both or
+    Whether the interval is inclusive on the left-side, right-side, both or
     neither.
     """
 
@@ -368,7 +368,7 @@ cdef class Interval(IntervalMixin):
         if inclusive is None:
             inclusive = "right"
 
-        if inclusive not in VALID_CLOSED:
+        if inclusive not in VALID_INCLUSIVE:
             raise ValueError(f"invalid option for 'inclusive': {inclusive}")
         if not left <= right:
             raise ValueError("left side of interval must be <= right side")
@@ -522,7 +522,7 @@ cdef class Interval(IntervalMixin):
         """
         Check whether two Interval objects overlap.
 
-        Two intervals overlap if they share a common point, including closed
+        Two intervals overlap if they share a common point, including inclusive
         endpoints. Intervals that only have an open endpoint in common do not
         overlap.
 
@@ -551,7 +551,7 @@ cdef class Interval(IntervalMixin):
         >>> i1.overlaps(i3)
         False
 
-        Intervals that share closed endpoints overlap:
+        Intervals that share inclusive endpoints overlap:
 
         >>> i4 = pd.Interval(0, 1, inclusive='both')
         >>> i5 = pd.Interval(1, 2, inclusive='both')
@@ -568,7 +568,7 @@ cdef class Interval(IntervalMixin):
             raise TypeError("`other` must be an Interval, "
                             f"got {type(other).__name__}")
 
-        # equality is okay if both endpoints are closed (overlap at a point)
+        # equality is okay if both endpoints are inclusive (overlap at a point)
         op1 = le if (self.closed_left and other.closed_right) else lt
         op2 = le if (other.closed_left and self.closed_right) else lt
 
@@ -580,16 +580,16 @@ cdef class Interval(IntervalMixin):
 
 @cython.wraparound(False)
 @cython.boundscheck(False)
-def intervals_to_interval_bounds(ndarray intervals, bint validate_closed=True):
+def intervals_to_interval_bounds(ndarray intervals, bint validate_inclusive=True):
     """
     Parameters
     ----------
     intervals : ndarray
         Object array of Intervals / nulls.
 
-    validate_closed: bool, default True
-        Boolean indicating if all intervals must be closed on the same side.
-        Mismatching closed will raise if True, else return None for closed.
+    validate_inclusive: bool, default True
+        Boolean indicating if all intervals must be inclusive on the same side.
+        Mismatching inclusive will raise if True, else return None for inclusive.
 
     Returns
     -------
@@ -602,7 +602,7 @@ def intervals_to_interval_bounds(ndarray intervals, bint validate_closed=True):
         object inclusive = None, interval
         Py_ssize_t i, n = len(intervals)
         ndarray left, right
-        bint seen_closed = False
+        bint seen_inclusive = False
 
     left = np.empty(n, dtype=intervals.dtype)
     right = np.empty(n, dtype=intervals.dtype)
@@ -620,13 +620,13 @@ def intervals_to_interval_bounds(ndarray intervals, bint validate_closed=True):
 
         left[i] = interval.left
         right[i] = interval.right
-        if not seen_closed:
-            seen_closed = True
+        if not seen_inclusive:
+            seen_inclusive = True
             inclusive = interval.inclusive
         elif inclusive != interval.inclusive:
             inclusive = None
-            if validate_closed:
-                raise ValueError("intervals must all be closed on the same side")
+            if validate_inclusive:
+                raise ValueError("intervals must all be inclusive on the same side")
 
     return left, right, inclusive
 

pandas/core/arrays/arrow/_arrow_utils.py

@@ -11,7 +11,7 @@
 from pandas.util._decorators import deprecate_kwarg
 from pandas.util._exceptions import find_stack_level
 
-from pandas.core.arrays.interval import VALID_CLOSED
+from pandas.core.arrays.interval import VALID_INCLUSIVE
 
 
 def fallback_performancewarning(version: str | None = None) -> None:
@@ -111,8 +111,8 @@ class ArrowIntervalType(pyarrow.ExtensionType):
     def __init__(self, subtype, inclusive: IntervalInclusiveType) -> None:
         # attributes need to be set first before calling
         # super init (as that calls serialize)
-        assert inclusive in VALID_CLOSED
-        self._closed: IntervalInclusiveType = inclusive
+        assert inclusive in VALID_INCLUSIVE
+        self._inclusive: IntervalInclusiveType = inclusive
         if not isinstance(subtype, pyarrow.DataType):
             subtype = pyarrow.type_for_alias(str(subtype))
         self._subtype = subtype
@@ -126,7 +126,7 @@ def subtype(self):
 
     @property
     def inclusive(self) -> IntervalInclusiveType:
-        return self._closed
+        return self._inclusive
 
     @property
     def closed(self) -> IntervalInclusiveType:
@@ -135,7 +135,7 @@ def closed(self) -> IntervalInclusiveType:
             FutureWarning,
             stacklevel=find_stack_level(),
         )
-        return self._closed
+        return self._inclusive
 
     def __arrow_ext_serialize__(self) -> bytes:
         metadata = {"subtype": str(self.subtype), "inclusive": self.inclusive}