From 799177d651e59c7186ea4ee4346d4dd6e4a174b2 Mon Sep 17 00:00:00 2001
From: Jelle Licht <jlicht@fsfe.org>
Date: Sat, 5 Sep 2020 20:41:21 +0200
Subject: settings.py: Support newer `ast.Constant' for settings.txt file.

In python 3.8, specific constant AST types are removed in favor of
ast.Constant. This change should work for both cases. See
https://bugs.python.org/issue32892 for the given rationale.
---
 settings.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/settings.py b/settings.py
index 517e785..7e988f7 100644
--- a/settings.py
+++ b/settings.py
@@ -235,6 +235,7 @@ else:
         # parse settings in a safe way, without exec
         settings = {}
         attributes = {
+            ast.Constant: 'value',
             ast.NameConstant: 'value',
             ast.Num: 'n',
             ast.Str: 's',
@@ -258,7 +259,7 @@ else:
                 log_ignored_line(node.lineno,  target.id + " is not a valid setting")
                 continue
             
-            if type(node.value) not in (ast.NameConstant, ast.Num, ast.Str):
+            if type(node.value) not in attributes:
                 log_ignored_line(node.lineno, "only literals allowed for values")
                 continue
 
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