commit 284c52da092438522949d6f96d8c1f9ff37f9f00
author Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com> Mon Apr 26 20:22:27 2021 -0400
committer GitHub <noreply@github.com> Tue Apr 27 01:22:27 2021 +0100
tree 8bbd5d4c0b4e396dd27f52b94f94e5c90b9e97f6
parent 7244c0060dc3ef909f34b0791c3e7490b0340d5e

bpo-38530: Require 50% similarity in NameError and AttributeError suggestions (GH-25584)

Python/suggestions.c

diff --git a/Python/suggestions.c b/Python/suggestions.c
index d4e9dc2..2fd6714 100644
--- a/Python/suggestions.c
+++ b/Python/suggestions.c
@@ -102,7 +102,10 @@ calculate_suggestions(PyObject *dir,
         if (current_distance == -1) {
             return NULL;
         }
-        if (current_distance == 0 || current_distance > MAX_DISTANCE) {
+        if (current_distance == 0 ||
+            current_distance > MAX_DISTANCE ||
+            current_distance * 2 > name_size)
+        {
             continue;
         }
         if (!suggestion || current_distance < suggestion_distance) {