[database] Read and decode from file before loading json

beat/backend/python/database.py

@@ -145,7 +145,7 @@ class Runner(object):
             return
 
         with open(filename, 'rb') as f:
-            objs = simplejson.load(f)
+            objs = simplejson.loads(f.read().decode('utf-8'))
 
         Entry = namedtuple('Entry', sorted(objs[0].keys()))
         objs = [ Entry(**x) for x in objs ]
@@ -241,7 +241,7 @@ class Database(object):
             return
 
         with open(json_path, 'rb') as f:
-            self.data = simplejson.load(f)
+            self.data = simplejson.loads(f.read().decode('utf-8'))
 
         self.code_path = self.storage.code.path
         self.code = self.storage.code.load()