From 25fe49a4fd8b1aff3753c60d8ca6d0f5d43b1b40 Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Thu, 23 Jul 2020 13:02:15 +0200
Subject: [PATCH] Backport PR #18026: FIX: Be sure matplotlib.backends is
 imported before we use it

---
 lib/matplotlib/pyplot.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/matplotlib/pyplot.py b/lib/matplotlib/pyplot.py
index 1314f055ec5d..4a172ade62b7 100644
--- a/lib/matplotlib/pyplot.py
+++ b/lib/matplotlib/pyplot.py
@@ -227,7 +227,8 @@ def switch_backend(newbackend):
         The name of the backend to use.
     """
     global _backend_mod
-
+    # make sure the init is pulled up so we can assign to it later
+    import matplotlib.backends
     close("all")
 
     if newbackend is rcsetup._auto_backend_sentinel: