to handle situations like ``if (foo) Py_RETURN_NONE else ...``.
#define Py_True ((PyObject *) &_Py_TrueStruct)
/* Macros for returning Py_True or Py_False, respectively */
-#define Py_RETURN_TRUE {Py_INCREF(Py_True); return Py_True;}
-#define Py_RETURN_FALSE {Py_INCREF(Py_False); return Py_False;}
+#define Py_RETURN_TRUE do {Py_INCREF(Py_True); return Py_True;} while (0)
+#define Py_RETURN_FALSE do {Py_INCREF(Py_False); return Py_False;} while (0)
/* Function to return a bool from a C long */
PyAPI_FUNC(PyObject *) PyBool_FromLong(long);
#define Py_None (&_Py_NoneStruct)
/* Macro for returning Py_None from a function */
-#define Py_RETURN_NONE {Py_INCREF(Py_None); return Py_None;}
+#define Py_RETURN_NONE do {Py_INCREF(Py_None); return Py_None;} while (0)
/*
Py_NotImplemented is a singleton used to signal that an operation is