From 5362ebae4390aebddc4e9249d4917eb1939af16d Mon Sep 17 00:00:00 2001
From: Ofek Lev <ofekmeister@gmail.com>
Date: Tue, 1 Aug 2017 17:31:04 -0400
Subject: [PATCH] allow existing directory in shutil.copytree

This is a legacy thing that wasn't updated with https://docs.python.org/3/library/os.html#os.makedirs
---
 Lib/shutil.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/shutil.py b/Lib/shutil.py
index bd4760f1a7409d..ebb6707525e92a 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -312,7 +312,7 @@ def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2,
     else:
         ignored_names = set()
 
-    os.makedirs(dst)
+    os.makedirs(dst, exist_ok=True)
     errors = []
     for name in names:
         if name in ignored_names: