Spelling and comments

Author: DanielNoord

astroid/interpreter/_import/util.py

@@ -31,7 +31,7 @@ def _is_old_setuptools_namespace_package(modname: str) -> bool:
 def is_namespace(modname: str) -> bool:
     """Determine whether we encounter a namespace package."""
     if PY36:
-        # On Pyhton 3.6 an AttributeError is raised when a package
+        # On Python 3.6 an AttributeError is raised when a package
         # is lacking a __path__ attribute and thus is not a
         # package.
         try:
@@ -61,6 +61,7 @@ def is_namespace(modname: str) -> bool:
     if not isinstance(spec.loader, abc.InspectLoader):
         return True
 
+    # Lastly we check if the package declares itself a namespace package
     source = spec.loader.get_source(spec.origin)
     return bool(
         source and "pkg_resources" in source and "declare_namespace(__name__)" in source