From 936c7c80f193ca5c7662a2b25742ac142bac5419 Mon Sep 17 00:00:00 2001
From: Dean Kleissas <dean.kleissas@gmail.com>
Date: Wed, 22 Jul 2020 12:01:31 -0400
Subject: [PATCH] When generating multi-part upload IDs remove `/` characters
 (#3164)

* / are not allowed in upload ids

* ran black
---
 moto/s3/models.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/moto/s3/models.py b/moto/s3/models.py
index b809c0fc2..233040435 100644
--- a/moto/s3/models.py
+++ b/moto/s3/models.py
@@ -280,7 +280,9 @@ class FakeMultipart(BaseModel):
         self.parts = {}
         self.partlist = []  # ordered list of part ID's
         rand_b64 = base64.b64encode(os.urandom(UPLOAD_ID_BYTES))
-        self.id = rand_b64.decode("utf-8").replace("=", "").replace("+", "")
+        self.id = (
+            rand_b64.decode("utf-8").replace("=", "").replace("+", "").replace("/", "")
+        )
 
     def complete(self, body):
         decode_hex = codecs.getdecoder("hex_codec")