Add method to flattendata

cdplib/FlattenData.py

@@ -170,4 +170,13 @@ class FlattenData():
         for key in to_append:
             dictionary[key] = to_append[key]
 
-        return dictionary
+        return dictionary
+
+    def flatten_if_not_flat(self, data: pd.DataFrame):
+
+        for data_type in data.dtypes:
+                if data_type == object:
+                    return self.flatten(data) 
+
+        return data   
+