Ticket #12958: trac_12958-sage_inspect_for_classes-nt.patch

sage/misc/sageinspect.py

@@ -1377 +1377 @@
           '    cpdef object pyobject(self):\n',
         ...
           '        return self / x\n'], ...)
-        
+
+    TESTS:
+
+    After #12958, old and new style classes are treated equivalently
+    when not found::
+
+        sage: class Foo: pass
+        sage: sage_getsourcelines(Foo)
+        Traceback (most recent call last):
+        ...
+        IOError: could not find class definition
+
+    However :func:`sage_getsourcelines` (in fact
+    :func:`inspect.findsource`) still fails on nested classes::
+
+        sage: import inspect
+        sage: inspect.findsource(Sets.ParentMethods)
+        Traceback (most recent call last):
+        ...
+        IOError: could not find class definition
 
     AUTHORS:
-    
+
     - William Stein
     - Extensions by Nick Alexander
     - Extension to interactive Cython code by Simon King
@@ -1413 +1432 @@
             try:
                 return inspect.getsourcelines(obj)
             except IOError:
-                if obj.__class__ != type:
+                if not inspect.isclass(obj):
                     return sage_getsourcelines(obj.__class__)
                 raise