diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index a49da40..e01409b 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -743,29 +743,9 @@
     return _PyUnicodeWriter_Finish(&writer);
 }
 
-#if 0
-static PyObject *
-complex_is_finite(PyObject *self)
-{
-    Py_complex c;
-    c = ((PyComplexObject *)self)->cval;
-    return PyBool_FromLong((long)(Py_IS_FINITE(c.real) &&
-                                  Py_IS_FINITE(c.imag)));
-}
-
-PyDoc_STRVAR(complex_is_finite_doc,
-"complex.is_finite() -> bool\n"
-"\n"
-"Returns True if the real and the imaginary part is finite.");
-#endif
-
 static PyMethodDef complex_methods[] = {
     {"conjugate",       (PyCFunction)complex_conjugate, METH_NOARGS,
      complex_conjugate_doc},
-#if 0
-    {"is_finite",       (PyCFunction)complex_is_finite, METH_NOARGS,
-     complex_is_finite_doc},
-#endif
     {"__getnewargs__",          (PyCFunction)complex_getnewargs,        METH_NOARGS},
     {"__format__",          (PyCFunction)complex__format__,
                                        METH_VARARGS, complex__format__doc},
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 1cb8ff7..609f66f 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -861,35 +861,6 @@
     return o;
 }
 
-#if 0
-static PyObject *
-float_is_inf(PyObject *v)
-{
-    double x = PyFloat_AsDouble(v);
-    if (x == -1.0 && PyErr_Occurred())
-        return NULL;
-    return PyBool_FromLong((long)Py_IS_INFINITY(x));
-}
-
-static PyObject *
-float_is_nan(PyObject *v)
-{
-    double x = PyFloat_AsDouble(v);
-    if (x == -1.0 && PyErr_Occurred())
-        return NULL;
-    return PyBool_FromLong((long)Py_IS_NAN(x));
-}
-
-static PyObject *
-float_is_finite(PyObject *v)
-{
-    double x = PyFloat_AsDouble(v);
-    if (x == -1.0 && PyErr_Occurred())
-        return NULL;
-    return PyBool_FromLong((long)Py_IS_FINITE(x));
-}
-#endif
-
 /*[clinic input]
 float.__trunc__
 
@@ -1852,14 +1823,6 @@
     FLOAT_FROMHEX_METHODDEF
     FLOAT_HEX_METHODDEF
     FLOAT_IS_INTEGER_METHODDEF
-#if 0
-    {"is_inf",          (PyCFunction)float_is_inf,      METH_NOARGS,
-     "Return True if the float is positive or negative infinite."},
-    {"is_finite",       (PyCFunction)float_is_finite,   METH_NOARGS,
-     "Return True if the float is finite, neither infinite nor NaN."},
-    {"is_nan",          (PyCFunction)float_is_nan,      METH_NOARGS,
-     "Return True if the float is not a number (NaN)."},
-#endif
     FLOAT___GETNEWARGS___METHODDEF
     FLOAT___GETFORMAT___METHODDEF
     FLOAT___SET_FORMAT___METHODDEF
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 708934c..67dce97 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -5464,13 +5464,6 @@
     return NULL;
 }
 
-#if 0
-static PyObject *
-long_is_finite(PyObject *v)
-{
-    Py_RETURN_TRUE;
-}
-#endif
 
 /*[clinic input]
 int.as_integer_ratio
@@ -5628,10 +5621,6 @@
     {"conjugate",       long_long_meth, METH_NOARGS,
      "Returns self, the complex conjugate of any int."},
     INT_BIT_LENGTH_METHODDEF
-#if 0
-    {"is_finite",       (PyCFunction)long_is_finite,    METH_NOARGS,
-     "Returns always True."},
-#endif
     INT_TO_BYTES_METHODDEF
     INT_FROM_BYTES_METHODDEF
     INT_AS_INTEGER_RATIO_METHODDEF