revert to older requests version

lib/requests/hooks.py

@@ -10,25 +10,36 @@ Available hooks:
 
 ``response``:
     The response generated from a Request.
+
 """
+
+
 HOOKS = ['response']
 
 
 def default_hooks():
-    return {event: [] for event in HOOKS}
+    hooks = {}
+    for event in HOOKS:
+        hooks[event] = []
+    return hooks
 
 # TODO: response is the only one
 
 
 def dispatch_hook(key, hooks, hook_data, **kwargs):
     """Dispatches a hook dictionary on a given piece of data."""
-    hooks = hooks or {}
-    hooks = hooks.get(key)
-    if hooks:
+
+    hooks = hooks or dict()
+
+    if key in hooks:
+        hooks = hooks.get(key)
+
         if hasattr(hooks, '__call__'):
             hooks = [hooks]
+
         for hook in hooks:
             _hook_data = hook(hook_data, **kwargs)
             if _hook_data is not None:
                 hook_data = _hook_data
+
     return hook_data