diff --git a/rainbowadn/instrument/instrumentation.py b/rainbowadn/instrument/instrumentation.py
index e5f9c27..18147c5 100644
--- a/rainbowadn/instrument/instrumentation.py
+++ b/rainbowadn/instrument/instrumentation.py
@@ -22,7 +22,7 @@ class Instrumentation(Generic[IType]):
         raise NotImplementedError
 
     def __enter__(self: IType) -> IType:
-        self: Instrumentation
+        assert isinstance(self, Instrumentation)
         assert not hasattr(self, '_method')
         assert not hasattr(self, '_wrap')
         method = getattr(self.target, self.methodname)
@@ -56,4 +56,5 @@ class Instrumentation(Generic[IType]):
         self.deinstrument()
 
     def enter(self: IType, stack: ExitStack) -> IType:
+        assert isinstance(self, Instrumentation)
         return stack.enter_context(self)
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..ec5ba61
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,12 @@
+from setuptools import setup
+
+setup(
+    name='rainbowadn',
+    version='',
+    packages=['rainbowadn.instrumentation'],
+    url='',
+    license='',
+    author='PARRRATE TNV',
+    author_email='',
+    description=''
+)