Fixed @TypeChecked returning None in certain circumstances

Fixes #103.
agronholm · Dec 25, 2019 · 47a2f5c · 47a2f5c
1 parent 1faec9d
commit 47a2f5c
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diff --git a/docs/versionhistory.rst b/docs/versionhistory.rst
@@ -3,6 +3,11 @@ Version history
 
 This library adheres to `Semantic Versioning 2.0 <https://semver.org/#semantic-versioning-200>`_.
 
+**UNRELEASED**
+
+- Fixed ``@typechecked`` returning ``None`` when called with ``always=True`` and Python runs in
+  optimized mode
+
 **2.7.0** (2019-12-10)
 
 - Added support for ``typing.Protocol`` subclasses

diff --git a/typeguard/__init__.py b/typeguard/__init__.py
@@ -774,12 +774,12 @@ class with this decorator.
     :param always: ``True`` to enable type checks even in optimized mode
 
     """
-    if not __debug__ and not always:  # pragma: no cover
-        return func
-
     if func is None:
         return partial(typechecked, always=always, _localns=_localns)
 
+    if not __debug__ and not always:  # pragma: no cover
+        return func
+
     if isclass(func):
         prefix = func.__qualname__ + '.'
         for key, attr in func.__dict__.items():