Don't use __code__

__code__ is a special method name used by python already
source:
https://docs.python.org/3/reference/datamodel.html#special-method-names

freqtrade/resolvers/iresolver.py

@@ -98,7 +98,7 @@ class IResolver:
             if obj:
                 obj[0].__file__ = str(entry)
                 if add_source:
-                    obj[0].__code__ = obj[1]
+                    obj[0].__source__ = obj[1]
                 return (obj[0], module_path)
         return (None, None)
 

freqtrade/rpc/api_server.py

@@ -608,7 +608,7 @@ class ApiServer(RPC):
 
         return self.rest_dump({
             'strategy': strategy_obj.get_strategy_name(),
-            'code': strategy_obj.__code__,
+            'code': strategy_obj.__source__,
          })
 
     @require_login