1 files changed, 12 insertions, 2 deletions
diff --git a/Lib/pdb.py b/Lib/pdb.py
index f9c5bee..d3824e1 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1348,7 +1348,7 @@ class Pdb(bdb.Bdb, cmd.Cmd):
         filename = self.curframe.f_code.co_filename
         breaklist = self.get_file_breaks(filename)
         try:
-            lines, lineno = inspect.getsourcelines(self.curframe)
+            lines, lineno = self._getsourcelines(self.curframe)
         except OSError as err:
             self.error(err)
             return
@@ -1364,7 +1364,7 @@ class Pdb(bdb.Bdb, cmd.Cmd):
         except:
             return
         try:
-            lines, lineno = inspect.getsourcelines(obj)
+            lines, lineno = self._getsourcelines(obj)
         except (OSError, TypeError) as err:
             self.error(err)
             return
@@ -1643,6 +1643,16 @@ class Pdb(bdb.Bdb, cmd.Cmd):
         self.run(target.code)
 
 
+    def _getsourcelines(self, obj):
+        # GH-103319
+        # inspect.getsourcelines() returns lineno = 0 for
+        # module-level frame which breaks our code print line number
+        # This method should be replaced by inspect.getsourcelines(obj)
+        # once this bug is fixed in inspect
+        lines, lineno = inspect.getsourcelines(obj)
+        lineno = max(1, lineno)
+        return lines, lineno
+
 # Collect all command help into docstring, if not run with -OO
 
 if __doc__ is not None: