Merge branch 'master' into transfered_type_casting

.travis.yml

@@ -80,7 +80,6 @@ matrix:
   allow_failures:
     - python: pypy
     - python: pypy3
-    - python: 3.7-dev
   exclude:
     - python: pypy
       env: BACKEND=cpp

Cython/Utility/CythonFunction.c

@@ -47,6 +47,8 @@ typedef struct {
 
 static PyTypeObject *__pyx_CyFunctionType = 0;
 
+#define __Pyx_CyFunction_Check(obj)  (__Pyx_TypeCheck(obj, __pyx_CyFunctionType))
+
 #define __Pyx_CyFunction_NewEx(ml, flags, qualname, self, module, globals, code) \
     __Pyx_CyFunction_New(__pyx_CyFunctionType, ml, flags, qualname, self, module, globals, code)
 
@@ -1255,7 +1257,7 @@ static PyObject* __Pyx_Method_ClassMethod(PyObject *method) {
         return PyClassMethod_New(method);
     }
 #ifdef __Pyx_CyFunction_USED
-    else if (__Pyx_TypeCheck(method, __pyx_CyFunctionType)) {
+    else if (__Pyx_CyFunction_Check(method)) {
         return PyClassMethod_New(method);
     }
 #endif

Cython/Utility/ObjectHandling.c

@@ -338,10 +338,17 @@ static PyObject *__Pyx_PyDict_GetItem(PyObject *d, PyObject* key) {
     value = PyDict_GetItemWithError(d, key);
     if (unlikely(!value)) {
         if (!PyErr_Occurred()) {
-            PyObject* args = PyTuple_Pack(1, key);
-            if (likely(args))
-                PyErr_SetObject(PyExc_KeyError, args);
-            Py_XDECREF(args);
+            if (unlikely(PyTuple_Check(key))) {
+                // CPython interprets tuples as separate arguments => must wrap them in another tuple.
+                PyObject* args = PyTuple_Pack(1, key);
+                if (likely(args)) {
+                    PyErr_SetObject(PyExc_KeyError, args);
+                    Py_DECREF(args);
+                }
+            } else {
+                // Avoid tuple packing if possible.
+                PyErr_SetObject(PyExc_KeyError, key);
+            }
         }
         return NULL;
     }
@@ -1432,12 +1439,13 @@ static int __Pyx_PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **me
     descr = _PyType_Lookup(tp, name);
     if (likely(descr != NULL)) {
         Py_INCREF(descr);
-        if (likely(PyFunction_Check(descr)
 #if PY_MAJOR_VERSION >= 3
-                // "PyMethodDescr_Type" is not part of the C-API in Py2.
-                || (Py_TYPE(descr) == &PyMethodDescr_Type)
+        if (likely(PyFunction_Check(descr) || (Py_TYPE(descr) == &PyMethodDescr_Type)))
+#else
+        // "PyMethodDescr_Type" is not part of the C-API in Py2.
+        if (likely(PyFunction_Check(descr)))
 #endif
-                )) {
+        {
             meth_found = 1;
         } else {
             f = Py_TYPE(descr)->tp_descr_get;
@@ -2227,10 +2235,11 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
     }
 #endif
 #ifdef __Pyx_CyFunction_USED
-    if (likely(PyCFunction_Check(func) || __Pyx_TypeCheck(func, __pyx_CyFunctionType))) {
+    if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
 #else
-    if (likely(PyCFunction_Check(func))) {
+    if (likely(PyCFunction_Check(func)))
 #endif
+    {
         if (likely(PyCFunction_GET_FLAGS(func) & METH_NOARGS)) {
             // fast and simple case that we are optimising for
             return __Pyx_PyObject_CallMethO(func, NULL);

docs/src/reference/language_basics.rst

@@ -12,6 +12,8 @@ Language Basics
 Cython File Types
 =================
 
+.. NOW IN USER GUIDE, DO NOT TOUCH
+
 There are three file types in Cython:
 
 * Implementation files carry a ``.pyx`` suffix

docs/src/tutorial/pxd_files.rst

+.. _pxd_files:
+
 pxd files
 =========