diff --git a/llpython/bytetype.py b/llpython/bytetype.py
index 6549133..26c1734 100644
--- a/llpython/bytetype.py
+++ b/llpython/bytetype.py
@@ -38,6 +38,7 @@ free = lc.Type.function(lvoid, (li8_ptr,))
 
 PyArg_ParseTuple = lc.Type.function(lc_int, [l_pyobj_p, li8_ptr], True)
 PyBool_FromLong = lc.Type.function(l_pyobj_p, [lc_long])
+PyErr_GivenExceptionMatches = lc.Type.function(lc_int, (l_pyobj_p, l_pyobj_p))
 PyEval_SaveThread = lc.Type.function(li8_ptr, [])
 PyEval_RestoreThread = lc.Type.function(lvoid, [li8_ptr])
 PyInt_AsLong = lc.Type.function(lc_long, [l_pyobj_p])
@@ -48,6 +49,9 @@ PyNumber_Multiply = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p))
 PyNumber_Remainder = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p))
 PyNumber_Subtract = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p))
 PyNumber_TrueDivide = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p))
+PyObject_RichCompare = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p,
+                                                    lc_int))
+PySequence_Contains = lc.Type.function(lc_int, (l_pyobj_p, l_pyobj_p))
 PyString_Check = lc.Type.function(lc_int, [l_pyobj_p])
 PyString_CheckExact = lc.Type.function(lc_int, [l_pyobj_p])
 PyString_Format = lc.Type.function(l_pyobj_p, (l_pyobj_p, l_pyobj_p))