add get_dates() method

camels/data.py

@@ -314,6 +314,12 @@ def plot_overview(self, start, end):
         plt.tight_layout()
         plt.show()
 
+    def get_dates(self):
+        start = self.data.index[0] - timedelta(1)
+        end = self.data.index[-1] + timedelta(1)
+
+        return start, end
+
 class DataLoader:
     """
     General DataLoader object providing access to batched sequences of

camels/pytorch.py

@@ -84,3 +84,6 @@ def data_loader(self,
         return DataLoader(self,
                           batch_size,
                           shuffle=shuffle)
+
+    def get_dates(self):
+        return super().get_dates()