Issue 5021: doctest.testfile should set __name__

2 files changed, 5 insertions, 1 deletions

diff --git a/Lib/collections.py b/Lib/collections.py
index 6831cf1..4bde5b3 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -111,7 +111,7 @@ def namedtuple(typename, field_names, verbose=False):
     # where the named tuple is created.  Bypass this step in enviroments where
     # sys._getframe is not defined (Jython for example).
     if hasattr(_sys, '_getframe'):
-        result.__module__ = _sys._getframe(1).f_globals['__name__']
+        result.__module__ = _sys._getframe(1).f_globals.get('__name__', '__main__')
 
     return result
 
diff --git a/Lib/doctest.py b/Lib/doctest.py
index 74ae795..5fa588d 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -837,6 +837,8 @@ class DocTestFinder:
             globs = globs.copy()
         if extraglobs is not None:
             globs.update(extraglobs)
+        if '__name__' not in globs:
+            globs['__name__'] = '__main__'  # provide a default module name
 
         # Recursively expore `obj`, extracting DocTests.
         tests = []
@@ -1947,6 +1949,8 @@ def testfile(filename, module_relative=True, name=None, package=None,
         globs = globs.copy()
     if extraglobs is not None:
         globs.update(extraglobs)
+    if '__name__' not in globs:
+        globs['__name__'] = '__main__'
 
     if raise_on_error:
         runner = DebugRunner(verbose=verbose, optionflags=optionflags)