From 1667caea48b4d4dffa4b7b4e6b4318d158d985f9 Mon Sep 17 00:00:00 2001
From: udf <tabhooked@gmail.com>
Date: Fri, 23 Nov 2018 16:58:36 +0200
Subject: [PATCH] make utils.get_peer_id raise with message about InputPeerSelf

---
 telethon/utils.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/telethon/utils.py b/telethon/utils.py
index 12fbdcc2..e3bc1227 100644
--- a/telethon/utils.py
+++ b/telethon/utils.py
@@ -728,6 +728,10 @@ def get_peer_id(peer, add_mark=True):
     if isinstance(peer, int):
         return peer if add_mark else resolve_id(peer)[0]
 
+    # Tell the user to use their client to resolve InputPeerSelf if we got one
+    if isinstance(peer, types.InputPeerSelf):
+        _raise_cast_fail(peer, 'int (you might want to use client.get_peer_id)')
+
     try:
         peer = get_peer(peer)
     except TypeError: