adjust other classes now that FS has a base "close" method

fs/__init__.py

@@ -15,7 +15,7 @@ implementations of this interface such as:
 
 """
 
-__version__ = "0.2.0a4"
+__version__ = "0.2.0a5"
 __author__ = "Will McGugan (will@willmcgugan.com)"
 
 #  'base' imports * from 'path' and 'errors', so their

fs/expose/fuse/__init__.py

@@ -488,10 +488,9 @@ class MountProcess(subprocess.Popen):
         """Perform the specified mount, return without waiting."""
         (fs,path,opts) = pickle.loads(data)
         opts["foreground"] = True
-        if hasattr(fs,"close"):
-            def unmount_callback():
-                fs.close()
-            opts["unmount_callback"] = unmount_callback
+        def unmount_callback():
+            fs.close()
+        opts["unmount_callback"] = unmount_callback
         mount(fs,path,*opts)
 
     @staticmethod
@@ -506,10 +505,9 @@ class MountProcess(subprocess.Popen):
             os.write(w,"S")
             os.close(w)
         opts["ready_callback"] = ready_callback
-        if hasattr(fs,"close"):
-            def unmount_callback():
-                fs.close()
-            opts["unmount_callback"] = unmount_callback
+        def unmount_callback():
+            fs.close()
+        opts["unmount_callback"] = unmount_callback
         try:
             mount(fs,path,**opts)
         except Exception:

fs/tempfs.py

@@ -49,8 +49,6 @@ class TempFS(OSFS):
                 self._cleaned = True
             finally:
                 self._lock.release()
-
-    def __del__(self):
-        self.close()
+        super(TempFS,self).close()
 
 

fs/wrapfs.py

@@ -233,8 +233,7 @@ class WrapFS(FS):
 
     @rewrite_errors
     def close(self):
-        if hasattr(self.wrapped_fs,"close"):
-            self.wrapped_fs.close()
+        self.wrapped_fs.close()
 
 def wrap_fs_methods(decorator,cls=None,exclude=[]):
     """Apply the given decorator to all FS methods on the given class.

fs/zipfs.py

@@ -116,9 +116,6 @@ class ZipFS(FS):
             self.zf.close()
             self.zf = _ExceptionProxy()
 
-    def __del__(self):
-        self.close()
-
     @synchronize
     def open(self, path, mode="r", **kwargs):
         path = normpath(path)