Couple Python 2 fixes in (unsupported) standalone scripts

Other_Tools/DRM_Key_Scripts/Adobe_Digital_Editions/adobekey.pyw

@@ -68,12 +68,20 @@ class SafeUnbuffered:
         if self.encoding == None:
             self.encoding = "utf-8"
     def write(self, data):
-        if isinstance(data,unicode):
+        if isinstance(data,str) or isinstance(data,unicode):
+            # str for Python3, unicode for Python2
             data = data.encode(self.encoding,"replace")
-        self.stream.write(data)
-        self.stream.flush()
+        try:
+            buffer = getattr(self.stream, 'buffer', self.stream)
+            # self.stream.buffer for Python3, self.stream for Python2
+            buffer.write(data)
+            buffer.flush()
+        except:
+            # We can do nothing if a write fails
+            raise
     def __getattr__(self, attr):
         return getattr(self.stream, attr)
+        
 
 try:
     from calibre.constants import iswindows, isosx