From 0feeccff85c586f5983054e48490404d966db7b5 Mon Sep 17 00:00:00 2001
From: Kostas Karmas <konskarm@gmail.com>
Date: Mon, 10 Aug 2020 15:30:55 +0200
Subject: [PATCH] Appease mypy complaints for AttributeErrors

CURA-7646
---
 plugins/3MFReader/ThreeMFWorkspaceReader.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/plugins/3MFReader/ThreeMFWorkspaceReader.py b/plugins/3MFReader/ThreeMFWorkspaceReader.py
index b775d0055c..0c1bd0a9a2 100755
--- a/plugins/3MFReader/ThreeMFWorkspaceReader.py
+++ b/plugins/3MFReader/ThreeMFWorkspaceReader.py
@@ -934,7 +934,8 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
         :return: The count of the machine's extruders
         """
         machine_extruder_count = None
-        if self._machine_info.definition_changes_info \
+        if self._machine_info \
+                and self._machine_info.definition_changes_info \
                 and "values" in self._machine_info.definition_changes_info.parser \
                 and "machine_extruder_count" in self._machine_info.definition_changes_info.parser["values"]:
             try: