From 2b63fefe4821baeb9f48a13f6395ba33d7a1a9d9 Mon Sep 17 00:00:00 2001
From: applemonkey496 <55333787+applemonkey496@users.noreply.github.com>
Date: Tue, 18 Aug 2020 16:32:16 -0700
Subject: [PATCH] Check type of xy in Image.putpixel

Raise a TypeError if xy is not a tuple with types (int, int)
---
 src/PIL/Image.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index 8ab67d55e..c046e6258 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -1733,6 +1733,11 @@ class Image:
         ):
             # RGB or RGBA value for a P image
             value = self.palette.getcolor(value)
+            
+        if self.mode = "L":
+            if (type(xy[0]) is not int) or (type(xy[1]) is not int):
+                raise TypeError(f"Expected argument xy to be a tuple (int, int) but got { xy }")
+                
         return self.im.putpixel(xy, value)
 
     def remap_palette(self, dest_map, source_palette=None):