Add support for climatology in datasets

change pregex if climato argument is present

lib/data/__init__.py

@@ -40,7 +40,13 @@ def create_dataset(module: str, pregex_func: Callable,
         return decorated
 
     # Create function to obtain pre-regex
-    get_pregex = with_args(pregex_func)
+    @with_args
+    def get_pregex(args):
+        if args.get('climato', None) is not None:
+            pregex = "{0:d}/{0:d}_%(m)%(d).nc".format(args['climato'])
+        else:
+            pregex = pregex_func(args)
+        return pregex
 
     # Create function to obtain data root directory
     @with_args