client.write(): only send value param if value is actually set.

joshuaconner · joshuaconner · commit 985118f00b27 · 2014-03-19T15:21:43.000-07:00
`client.update()` calls to directories were failing because the client sends and empty `value` param with every `client.write()` call. This only sends a `value` param in `client.write()` if `value` is set, which fixes this.
diff --git a/src/etcd/client.py b/src/etcd/client.py
@@ -240,9 +240,9 @@ def write(self, key, value, ttl=None, dir=False, append=False, **kwdargs):
 
         """
         key = self._sanitize_key(key)
-        params = {
-            'value': value
-        }
+        params = {}
+        if value:
+            params['value'] = value
 
         if ttl:
             params['ttl'] = ttl
