--- a/files.py	Thu May 19 02:24:59 2011 +0100
+++ b/files.py	Thu May 19 02:55:36 2011 +0100
@@ -45,7 +45,10 @@
 	def extract(self, name, target): raise NotImplementedError
 	
 	def __del__(self):
-		del self.file
+		try:
+			del self.file
+		except NameError:
+			pass
 
 try:
 	import tarfile
@@ -53,7 +56,7 @@
 	TarArchive = None
 else:
 	class TarArchive(Archive):
-		__slots__ = '__namelist'
+		__slots__ = '_namelist'
 		
 		def __init__(self, path):
 			self.file = tarfile.open(path)
@@ -68,15 +71,15 @@
 			return self.file.extractfile(name)
 		
 		def exists(self, queried_name):
-			if not hasattr(self, '__namelist'):
+			if not hasattr(self, '_namelist'):
 				names = set()
 				for name in self.file.getnames():
 					cutname = name
 					while cutname:
 						names.add(cutname)
 						cutname = cutname.rpartition('/')[0]
-				self.__namelist = frozenset(names)
-			return queried_name in self.__namelist
+				self._namelist = frozenset(names)
+			return queried_name in self._namelist
 		
 		def __enter__(self):
 			if hasattr(self.file, '__enter__'):
@@ -102,7 +105,7 @@
 	ZipArchive = None
 else:
 	class ZipArchive(Archive):
-		__slots__ = '__namelist'
+		__slots__ = '_namelist'
 		
 		def __init__(self, path):
 			self.file = zipfile.ZipFile(path)
@@ -123,15 +126,15 @@
 			return self.file.open(name, 'rU')
 		
 		def exists(self, queried_name):
-			if not hasattr(self, '__namelist'):
+			if not hasattr(self, '_namelist'):
 				names = set()
 				for name in self.file.namelist():
 					cutname = name
 					while cutname:
 						names.add(cutname)
 						cutname = cutname.rpartition('/')[0]
-				self.__namelist = frozenset(names)
-			return queried_name in self.__namelist
+				self._namelist = frozenset(names)
+			return queried_name in self._namelist
 		
 		def __enter__(self):
 			if hasattr(self.file, '__enter__'):