From 078573bb82989cdd115b9f79bf12386f93e1b1b8 Mon Sep 17 00:00:00 2001
From: Oleg Smirnov <osmirnov@gmail.com>
Date: Thu, 16 Apr 2020 13:08:00 +0200
Subject: [PATCH] fixed syntaxwarning from later pythons

---
 ShadeMS/main.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ShadeMS/main.py b/ShadeMS/main.py
index 1c2ea96..ba42d4f 100644
--- a/ShadeMS/main.py
+++ b/ShadeMS/main.py
@@ -348,7 +348,7 @@ def generate_string_from_keys(template, keys, listsep=" ", titlesep=" ", prefix=
         # convert lists to strings, add Capitalized keys with titles
         for key, value in keys.items():
             capkey = key.title()
-            if value is '':
+            if value == '':
                 full_keys[capkey] = ''
             else:
                 if type(value) is list:                               # e.g. scan=[1,2] becomes scan="1 2"