diff --git a/cfg/python.cfg b/cfg/python.cfg
index dda1c1481..ba3bfabeb 100644
--- a/cfg/python.cfg
+++ b/cfg/python.cfg
@@ -35,7 +35,7 @@
   <function name="Py_IsInitialized">
     <noreturn>false</noreturn>
     <pure/>
-    <returnValue type="void"/>
+    <returnValue type="int"/>
     <use-retval/>
   </function>
   <function name="Py_Main">
@@ -54,7 +54,25 @@
     <noreturn>false</noreturn>
     <returnValue type="void"/>
     <arg nr="1">
+      <not-null/>
+      <not-uninit/>
       <strz/>
+    </arg>
+  </function>
+  <function name="PyErr_Clear">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+  </function>
+  <function name="PyErr_SetObject">
+    <leak-ignore/>
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-null/>
       <not-uninit/>
     </arg>
   </function>
@@ -64,7 +82,6 @@
     <noreturn>false</noreturn>
     <returnValue type="void"/>
     <arg nr="1">
-      <strz/>
       <not-uninit/>
     </arg>
     <arg nr="2">