Fixes #41

AlexandreDecan · Sep 18, 2020 · b6e0931 · b6e0931
1 parent 8635698
commit b6e0931
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 2.1.3 (2020-09-18)
+
+### Fixed
+ - Empty intervals are contained in all intervals ([#41](https://github.com/AlexandreDecan/portion/issues/41)).
+
+
 
 ## 2.1.2 (2020-09-16)
 

diff --git a/README.md b/README.md
@@ -21,7 +21,7 @@ The `portion` library (formerly distributed as `python-intervals`) provides data
  - Heavily tested with high code coverage.
 
 **Latest release:**
- - `portion`: 2.1.2 on 2020-09-16 ([documentation](https://github.com/AlexandreDecan/portion/blob/2.1.2/README.md), [changes](https://github.com/AlexandreDecan/portion/blob/2.1.2/CHANGELOG.md)).
+ - `portion`: 2.1.3 on 2020-09-18 ([documentation](https://github.com/AlexandreDecan/portion/blob/2.1.3/README.md), [changes](https://github.com/AlexandreDecan/portion/blob/2.1.3/CHANGELOG.md)).
  - `python-intervals`: 1.10.0 on 2019-09-26 ([documentation](https://github.com/AlexandreDecan/portion/blob/1.10.0/README.md), [changes](https://github.com/AlexandreDecan/portion/blob/1.10.0/README.md#changelog)).
 
  Note that `python-intervals` will no longer receive updates since it has been replaced by `portion`.

diff --git a/portion/interval.py b/portion/interval.py
@@ -459,7 +459,9 @@ def __or__(self, other):
 
     def __contains__(self, item):
         if isinstance(item, Interval):
-            if self.atomic:
+            if item.empty:
+                return True
+            elif self.atomic:
                 left = item.lower > self.lower or (
                     item.lower == self.lower and
                     (item.left == self.left or self.left == Bound.CLOSED)

diff --git a/setup.py b/setup.py
@@ -7,7 +7,7 @@
 
 setup(
     name='portion',
-    version='2.1.2',
+    version='2.1.3',
     license='LGPLv3',
 
     author='Alexandre Decan',