if arg of put is str don't decode it

etcd_wrapper.py

@@ -2,6 +2,7 @@ import etcd3
 import json
 from dataclasses import dataclass
 
+
 @dataclass(init=False)
 class EtcdEntry:
     def __init__(self, meta, value, value_in_json=False):
@@ -15,6 +16,7 @@ class EtcdEntry:
     key: str
     value: str
 
+
 class Etcd3Wrapper(object):
     def __init__(self, *args, **kwargs):
         self.client = etcd3.client(*args, **kwargs)
@@ -29,8 +31,11 @@ class Etcd3Wrapper(object):
         _key, _value = args
         if value_in_json:
             _value = json.dumps(_value)
-        return self.client.put(_key.decode("utf-8"), _value)
 
+        if not isinstance(_key, str):
+            _key = _key.decode("utf-8")
+
+        return self.client.put(_key, _value, **kwargs)
 
     def get_prefix(self, *args, value_in_json=False, **kwargs):
         r = self.client.get_prefix(*args, **kwargs)