Python 2 test compatibility

Cython/Compiler/Nodes.py

@@ -5998,7 +5998,7 @@ class ParallelRangeNode(ParallelStatNode):
 
         if self.schedule not in (None, 'static', 'dynamic', 'guided',
                                  'runtime'):
-            error(self.pos, "Invalid schedule argument to prange: %r" %
+            error(self.pos, "Invalid schedule argument to prange: %s" %
                                                         (self.schedule,))
 
         for kw in self.kwargs:

tests/errors/e_cython_parallel.pyx

@@ -43,7 +43,7 @@ e_cython_parallel.pyx:6:7: cython.parallel.parallel is not a module
 e_cython_parallel.pyx:7:0: No such directive: cython.parallel.something
 e_cython_parallel.pyx:13:6: prange() can only be used as part of a for loop
 e_cython_parallel.pyx:13:6: prange() can only be used without the GIL
-e_cython_parallel.pyx:18:19: Invalid schedule argument to prange: 'invalid_schedule'
+e_cython_parallel.pyx:18:19: Invalid schedule argument to prange: invalid_schedule
 e_cython_parallel.pyx:21:5: The parallel section may only be used without the GIL
 e_cython_parallel.pyx:27:10: target may not be a Python object as we don't have the GIL
 e_cython_parallel.pyx:30:9: Can only iterate over an iteration variable