don't close the file in __del__ if the module hasn't opened it

EdfFile.py

@@ -87,7 +87,7 @@
       through GetData method call.      
 """
 __author__ =  'Alexandre Gobbo (gobbo@esrf.fr)'
-__version__=  '$Revision: 1.11 $'
+__version__=  '$Revision: 1.12 $'
 
 ################################################################################  
 import sys, string
@@ -168,6 +168,7 @@ class  EdfFile:
         else: self.SysByteOrder="LowByteFirst"
 
         if self.File is None:
+            self.__ownedOpen = True
             try:
                 if os.path.isfile(self.FileName)==0:                
                     self.File = open(self.FileName, "wb")
@@ -185,6 +186,7 @@ class  EdfFile:
                 except:
                     pass
                 raise "EdfFile: Error opening file"
+        else: self.__ownedOpen = False
 
         self.File.seek(0, 0)
         
@@ -628,7 +630,8 @@ class  EdfFile:
 
     def __del__(self):
         try:
-            self.File.close()
+            if self.__ownedOpen :
+                self.File.close()
         except:
             pass