fallback to partial read if seek not supported

dimagi · Apr 21, 2020 · 05cadf1 · 05cadf1
1 parent 7c5d4bf
commit 05cadf1
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/corehq/util/download.py b/corehq/util/download.py
@@ -37,9 +37,9 @@ def _partial_read(current_position, stop):
 
                 yield data
 
-        if hasattr(self.filelike, 'seek'):
+        try:
             self.filelike.seek(self.start)
-        else:
+        except (AttributeError, ValueError):
             list(itertools.dropwhile(lambda x: True, _partial_read(0, self.start)))
 
         for data in _partial_read(self.start, self.stop):