py23 compat

Cython/Compiler/CythonScope.py

@@ -346,7 +346,7 @@ cdef class array:
             self.len = stride * self.itemsize
         elif mode == "c":
             idx = self.ndim-1; stride = itemsize
-            for dim in reversed(shape):
+            for dim in shape[::-1]:
                 self.strides[idx] = stride
                 int_dim = <Py_ssize_t>dim
                 stride = stride * int_dim

Cython/Compiler/MemoryView.py

@@ -567,20 +567,26 @@ def get_axes_specs(env, axes):
 
     return axes_specs
 
+def all(it):
+    for item in it:
+        if not item:
+            return False
+    return True
+
 def is_cf_contig(specs):
     is_c_contig = is_f_contig = False
 
     if (len(specs) == 1 and specs == [('direct', 'contig')]):
         is_c_contig = True
 
-    elif (specs[-1] == ('direct','contig') and 
-          all(axis == ('direct','follow') for axis in specs[:-1])):
+    elif (specs[-1] == ('direct','contig') and
+          all([axis == ('direct','follow') for axis in specs[:-1]])):
         # c_contiguous: 'follow', 'follow', ..., 'follow', 'contig'
         is_c_contig = True
 
     elif (len(specs) > 1 and 
-        specs[0] == ('direct','contig') and 
-        all(axis == ('direct','follow') for axis in specs[1:])):
+        specs[0] == ('direct','contig') and
+        all([axis == ('direct','follow') for axis in specs[1:]])):
         # f_contiguous: 'contig', 'follow', 'follow', ..., 'follow'
         is_f_contig = True
 

Cython/Compiler/PyrexTypes.py

@@ -578,9 +578,6 @@ class PyObjectType(PyrexType):
         else:
             return cname
 
-    def invalid_value(self):
-        return "1"
-
     def global_init_code(self, entry, code):
         code.put_init_var_to_py_none(entry, nanny=False)