code refactor

related to #8 (closed):

• I kept changes per commit small, so the number of commits got kind of numerous...

src/icartt/dataset.py

@@ -163,7 +163,7 @@ class DataStore2110(collections.UserDict):
         ivarvalue = vmiss_to_npnan(kwargs[self.ivarname], self.missvals[self.ivarname])
 
         # this is an AUX line
-        if any([x in self.auxvarnames for x in kwargs.keys()]): # TODO: any (all as well) do not require a comprehension; pure generator expression works fine
+        if any(x in self.auxvarnames for x in kwargs.keys()):
             # and we create the whole dataset if needed
             if not ivarvalue in self.data.keys():
                 self.data[ivarvalue] = {
@@ -173,7 +173,7 @@ class DataStore2110(collections.UserDict):
             self.data[ivarvalue]["AUX"].add(**kwargs)
 
         # this is a DEP line
-        if any([x in self.dvarnames for x in kwargs.keys()]): # TODO: see above: remove [ ]
+        if any(x in self.dvarnames for x in kwargs.keys()):
             if not self.ibvarname in kwargs.keys():
                 raise Exception("Need independent (bounded) variable data.")