From b0ef319bb5bf590cdbf0f588bef679f83938f2ec Mon Sep 17 00:00:00 2001
From: Bryn Pickering <17178478+brynpickering@users.noreply.github.com>
Date: Mon, 23 Oct 2023 15:58:58 +0100
Subject: [PATCH] Add typing import

---
 src/calliope/core/io.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calliope/core/io.py b/src/calliope/core/io.py
index 8542db88d..5a8ccbf02 100644
--- a/src/calliope/core/io.py
+++ b/src/calliope/core/io.py
@@ -10,6 +10,7 @@
 """
 
 import os
+from typing import Union
 
 # We import netCDF4 before xarray to mitigate a numpy warning:
 # https://github.com/pydata/xarray/issues/7259