Fix memmap passing on it's mmap attribute to views but not closing the file unless it owns the memmap

1 files changed, 4 insertions, 6 deletions

diff --git a/numpy/core/memmap.py b/numpy/core/memmap.py
index 831ba3307..3650091bc 100644
--- a/numpy/core/memmap.py
+++ b/numpy/core/memmap.py
@@ -80,10 +80,7 @@ class memmap(ndarray):
         if obj is not None:
             if not isinstance(obj, memmap):
                 raise ValueError, "Cannot create a memmap array that way"
-            # it would be nice to carry the along the _mmap name
-            #  but then we might have problems because self could close
-            #  it while obj is still holding it.  So, we don't do
-            #  anything at this point. 
+            self._mmap = obj._mmap
         else:
             self._mmap = None
 
@@ -91,9 +88,10 @@ class memmap(ndarray):
         self._mmap.flush()
 
     def close(self):
-        self._mmap.close()
+        if (self.base is self._mmap):
+            self._mmap.close()
 
     def __del__(self):
         if self._mmap is not None:
             self._mmap.flush()
-            del self._mmap
+            self.close()