diff --git a/cfg/python.cfg b/cfg/python.cfg
index e936941b8..02a400e4e 100644
--- a/cfg/python.cfg
+++ b/cfg/python.cfg
@@ -59,10 +59,89 @@
       <strz/>
     </arg>
   </function>
+  <!-- void PyErr_Clear() -->
   <function name="PyErr_Clear">
     <noreturn>false</noreturn>
     <returnValue type="void"/>
   </function>
+  <!-- PyObject* PyErr_Format(PyObject *exception, const char *format, ...) -->
+  <function name="PyErr_Format">
+    <noreturn>false</noreturn>
+    <returnValue type="PyObject*">NULL</returnValue>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="variadic" direction="in">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- PyObject* PyErr_FormatV(PyObject *exception, const char *format, va_list vargs) -->
+  <function name="PyErr_FormatV">
+    <noreturn>false</noreturn>
+    <returnValue type="PyObject*">NULL</returnValue>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="3" direction="in">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- PyObject* PyErr_NewException(const char *name, PyObject *base, PyObject *dict) -->
+  <function name="PyErr_NewException">
+    <noreturn>false</noreturn>
+    <returnValue type="PyObject*"/>
+    <use-retval/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- PyObject* PyErr_NewExceptionWithDoc(const char *name, const char *doc, PyObject *base, PyObject *dict) -->
+  <function name="PyErr_NewExceptionWithDoc">
+    <noreturn>false</noreturn>
+    <returnValue type="PyObject*"/>
+    <use-retval/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+    </arg>
+    <arg nr="4">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- PyObject* PyErr_SetFromErrno(PyObject *type) -->
+  <function name="PyErr_SetFromErrno">
+    <noreturn>false</noreturn>
+    <returnValue type="PyObject*">NULL</returnValue>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- void PyErr_SetObject(PyObject *type, PyObject *value) -->
   <function name="PyErr_SetObject">
     <leak-ignore/>
     <noreturn>false</noreturn>
@@ -84,7 +163,7 @@
     <arg nr="1">
       <not-uninit/>
     </arg>
-    <arg nr="2">
+    <arg nr="2" direction="in">
       <strz/>
       <not-null/>
       <not-uninit/>