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Here's a patch that fixes the problem so that modules from
zip files can be reloaded.

The problem was the PyImport_ReloadModulefunction not
passing a loader around. Perhaps this is naive, and the
PyImport_ReloadModule was purposefully not using a loader,
but, again, it works for me.

cvs diff -u dist\src\Python\import.c (in directory
C:\cvs\python\)
Index: dist/src/Python/import.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Python/import.c,v
retrieving revision 2.230
diff -u -r2.230 import.c
--- dist/src/Python/import.c	1 Apr 2004 02:45:22 -0000	2.230
+++ dist/src/Python/import.c	2 Apr 2004 00:18:46 -0000
@@ -2217,7 +2217,7 @@
 PyImport_ReloadModule(PyObject *m)
 {
 	PyObject *modules = PyImport_GetModuleDict();
-	PyObject *path = NULL;
+	PyObject *path, *loader = NULL;
 	char *name, *subname;
 	char buf[MAXPATHLEN+1];
 	struct filedescr *fdp;
@@ -2259,11 +2259,12 @@
 			PyErr_Clear();
 	}
 	buf[0] = '\0';
-	fdp = find_module(name, subname, path, buf, MAXPATHLEN+1,
&fp, NULL);
+	fdp = find_module(name, subname, path, buf, MAXPATHLEN+1,
&fp, &loader);
 	Py_XDECREF(path);
 	if (fdp == NULL)
 		return NULL;
-	m = load_module(name, fp, buf, fdp->type, NULL);
+	m = load_module(name, fp, buf, fdp->type, loader);
+    Py_XDECREF(loader);
 	if (fp)
 		fclose(fp);
 	return m;