From 69b6fd79ead48ef89da9dff748032b8bd3074f6a Mon Sep 17 00:00:00 2001
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: Mon, 13 Feb 2023 00:33:25 -0800
Subject: [PATCH] Revert "Expose session start file in __file__. (#1078)"

This reverts commit 1185d12121a6b0dd93e84f9a5b21a8aa733eb2b2.
---
 ipykernel/ipkernel.py | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/ipykernel/ipkernel.py b/ipykernel/ipkernel.py
index 569e5a881..572781a15 100644
--- a/ipykernel/ipkernel.py
+++ b/ipykernel/ipkernel.py
@@ -3,7 +3,6 @@
 import asyncio
 import builtins
 import getpass
-import os
 import signal
 import sys
 import threading
@@ -127,11 +126,6 @@ def __init__(self, **kwargs):
             compiler_class=XCachingCompiler,
         )
         self.shell.displayhook.session = self.session
-
-        jupyter_session_name = os.environ.get('JPY_SESSION_NAME')
-        if jupyter_session_name:
-            self.shell.user_ns['__file__'] = jupyter_session_name
-
         self.shell.displayhook.pub_socket = self.iopub_socket
         self.shell.displayhook.topic = self._topic("execute_result")
         self.shell.display_pub.session = self.session