bpo-32991: Restore expectation that inspect.getfile raises TypeError on namespace package (GH-5980) (GH-5997)

* bpo-32991: Add test capturing expectation.

DocTestFinder.find should return an empty list for doctests in a namespace package.

* bpo-32991: Restore expectation that inspect.getfile on a namespace package raises TypeError.
(cherry picked from commit b9650a04a81355c8a7dcd0464c28febfb4bfc0a9)

Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/Lib/inspect.py b/Lib/inspect.py
index bc97efe..d629689 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -642,13 +642,13 @@ def cleandoc(doc):
 def getfile(object):
     """Work out which source or compiled file an object was defined in."""
     if ismodule(object):
-        if hasattr(object, '__file__'):
+        if getattr(object, '__file__', None):
             return object.__file__
         raise TypeError('{!r} is a built-in module'.format(object))
     if isclass(object):
         if hasattr(object, '__module__'):
             object = sys.modules.get(object.__module__)
-            if hasattr(object, '__file__'):
+            if getattr(object, '__file__', None):
                 return object.__file__
         raise TypeError('{!r} is a built-in class'.format(object))
     if ismethod(object):