Simplify set updates with dictionary keys.

No need to generate lists of keys.
No change in code function.

Author: pavoljuhas

diffpy/srfit/equation/equationmod.py

@@ -125,7 +125,7 @@ def __getattr__(self, name):
     def __dir__(self):
         "Return sorted list of attributes for this object."
         rv = set(dir(type(self)))
-        rv.update(self.__dict__.keys() + self.argdict.keys())
+        rv.update(self.__dict__, self.argdict)
         rv = sorted(rv)
         return rv
 

diffpy/srfit/fitbase/parameter.py

@@ -180,7 +180,7 @@ def __getattr__(self, attrname):
     def __dir__(self):
         "Return sorted list of attributes for this object."
         rv = set(dir(type(self)))
-        rv.update(self.__dict__.keys() + dir(self.par))
+        rv.update(self.__dict__, dir(self.par))
         rv = sorted(rv)
         return rv
 

diffpy/srfit/fitbase/recipeorganizer.py

@@ -157,7 +157,7 @@ def __getattr__(self, name):
     def __dir__(self):
         "Return sorted list of attributes for this object."
         rv = set(dir(type(self)))
-        rv.update(self.__dict__.keys())
+        rv.update(self.__dict__)
         # self.get fetches looks up for items in all managed dictionaries.
         # Add keys from each dictionary in self.__managed.
         rv.update(*self.__managed)