implement ravel method for numpypy

gistfile1.diff

diff -r 07bd76d923fd pypy/module/micronumpy/interp_numarray.py
--- a/pypy/module/micronumpy/interp_numarray.py	Wed Jan 18 09:32:00 2012 +1000
+++ b/pypy/module/micronumpy/interp_numarray.py	Sat Jan 21 21:33:07 2012 +0100
@@ -558,6 +558,12 @@
             arr.setshape(space, new_shape)
         return arr
 
+    def descr_ravel(self, space, w_order="C"):
+        if space.str_w(w_order) != "C":
+            raise OperationError(space.w_NotImplementedError, space.wrap(
+                "Ravel with other orders than C not implemented."))
+        return self.descr_reshape(space, [space.wrap(-1)])
+
     def descr_tolist(self, space):
         if len(self.shape) == 0:
             assert isinstance(self, Scalar)
@@ -1275,6 +1281,7 @@
 
     copy = interp2app(BaseArray.descr_copy),
     reshape = interp2app(BaseArray.descr_reshape),
+    ravel = interp2app(BaseArray.descr_ravel),
     tolist = interp2app(BaseArray.descr_tolist),
 )
 
diff -r 07bd76d923fd pypy/module/micronumpy/test/test_numarray.py
--- a/pypy/module/micronumpy/test/test_numarray.py	Wed Jan 18 09:32:00 2012 +1000
+++ b/pypy/module/micronumpy/test/test_numarray.py	Sat Jan 21 21:33:07 2012 +0100
@@ -439,6 +439,24 @@
         y = z.reshape(4, 3, 8)
         assert y.shape == (4, 3, 8)
 
+    def test_ravel(self):
+        from _numpypy import array
+        arr = array([range(i, i + 5) for i in range(3)])
+        b = arr.ravel()
+        assert b.shape == (arr.size,)
+        assert list(b) == [0, 1, 2, 3, 4, 1, 2, 3, 4, 5, 2, 3, 4, 5, 6]
+
+        arr2 = array(range(0, 10))
+        arr2.ravel() == arr2
+
+        arr3 = array([[range(3) for i in range (3)] for k in range(2)])
+        c = arr3.ravel()
+        assert c.shape == (arr3.size,)
+        assert list(c) == [0, 1, 2, 0, 1, 2, 0, 1, 2,
+                           0, 1, 2, 0, 1, 2, 0, 1, 2]
+
+        raises(NotImplementedError, arr.ravel, "F")
+
     def test_add(self):
         from _numpypy import array
         a = array(range(5))