add Array.copy

Fixes dask#911
mrocklin · Apr 22, 2016 · ec81248 · ec81248
1 parent 6e7fea6
commit ec81248
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diff --git a/dask/array/core.py b/dask/array/core.py
@@ -1377,6 +1377,12 @@ def view(self, dtype, order='C'):
         out._chunks = chunks
         return out
 
+    def copy(self):
+        """
+        Copy array.  This is a no-op for dask.arrays, which are immutable
+        """
+        return self
+
     def to_imperative(self):
         """ Convert Array into dask Values
 

diff --git a/dask/array/tests/test_array_core.py b/dask/array/tests/test_array_core.py
@@ -2003,3 +2003,8 @@ def test_atop_names():
 def test_A_property():
     x = da.ones(5, chunks=(2,))
     assert x.A is x
+
+
+def test_copy():
+    x = da.ones(5, chunks=(2,))
+    assert x.copy() is x