[3.12] gh-87115: Set __main__.__spec__ to None in pdb (GH-116141) (#116154)

gaogaotiantian · web-flow · commit 40e9295a581f · 2024-02-29T23:24:09.000Z
* gh-87115: Set `__main__.__spec__` to `None` in pdb (#116141) (cherry picked from commit ccfc042) * [3.12] gh-87115: Set `__main__.__spec__` to `None` in pdb (GH-116141) (cherry picked from commit ccfc042) Co-authored-by: Tian Gao <gaogaotiantian@hotmail.com>
diff --git a/Lib/pdb.py b/Lib/pdb.py
@@ -154,6 +154,7 @@ def namespace(self):
             __name__='__main__',
             __file__=self,
             __builtins__=__builtins__,
+            __spec__=None,
         )
 
     @property
diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py
@@ -2013,6 +2013,18 @@ def bœr():
             ('bœr', 1),
         )
 
+    def test_spec(self):
+        # Test that __main__.__spec__ is set to None when running a script
+        script = """
+            import __main__
+            print(__main__.__spec__)
+        """
+
+        commands = "continue"
+
+        stdout, _ = self.run_pdb_script(script, commands)
+        self.assertIn('None', stdout)
+
     def test_issue7964(self):
         # open the file as binary so we can force \r\n newline
         with open(os_helper.TESTFN, 'wb') as f:
diff --git a/Misc/NEWS.d/next/Library/2024-02-29-20-06-06.gh-issue-87115.FVMiOR.rst b/Misc/NEWS.d/next/Library/2024-02-29-20-06-06.gh-issue-87115.FVMiOR.rst
@@ -0,0 +1 @@
+Set ``__main__.__spec__`` to ``None`` when running a script with :mod:`pdb`

Original file line number	Diff line number	Diff line change
`@@ -154,6 +154,7 @@ def namespace(self):`
`154`	`154`	`__name__='__main__',`
`155`	`155`	`__file__=self,`
`156`	`156`	`__builtins__=__builtins__,`
	`157`	`+ __spec__=None,`
`157`	`158`	`)`
`158`	`159`
`159`	`160`	`@property`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Set ``__main__.__spec__`` to ``None`` when running a script with :mod:`pdb`