diff --git a/Lib/base64.py b/Lib/base64.py
old mode 100755
new mode 100644
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """RFC 3548: Base16, Base32, Base64 Data Encodings"""
 
 # Modified 04-Oct-1995 by Jack Jansen to use binascii module
diff --git a/Lib/cProfile.py b/Lib/cProfile.py
old mode 100755
new mode 100644
--- a/Lib/cProfile.py
+++ b/Lib/cProfile.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Python interface for the 'lsprof' profiler.
    Compatible with the 'profile' module.
 """
diff --git a/Lib/cgi.py b/Lib/cgi.py
old mode 100755
new mode 100644
diff --git a/Lib/difflib.py b/Lib/difflib.py
--- a/Lib/difflib.py
+++ b/Lib/difflib.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """
 Module difflib -- helpers for computing deltas between objects.
 
diff --git a/Lib/encodings/rot_13.py b/Lib/encodings/rot_13.py
old mode 100755
new mode 100644
--- a/Lib/encodings/rot_13.py
+++ b/Lib/encodings/rot_13.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 """ Python Character Mapping Codec for ROT13.
 
 This codec de/encodes from str to str and is therefore usable with
diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py
--- a/Lib/http/cookies.py
+++ b/Lib/http/cookies.py
@@ -1,6 +1,3 @@
-#!/usr/bin/env python3
-#
-
 ####
 # Copyright 2000 by Timothy O'Malley <timo@alum.mit.edu>
 #
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 import getopt
 import os
 import os.path
diff --git a/Lib/keyword.py b/Lib/keyword.py
old mode 100755
new mode 100644
--- a/Lib/keyword.py
+++ b/Lib/keyword.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Keywords (from "graminit.c")
 
 This file is automatically generated; please don't muck it up!
diff --git a/Lib/lib2to3/pgen2/token.py b/Lib/lib2to3/pgen2/token.py
old mode 100755
new mode 100644
--- a/Lib/lib2to3/pgen2/token.py
+++ b/Lib/lib2to3/pgen2/token.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Token constants (from "token.h")."""
 
 #  Taken from Python (r53757) and modified to include some tokens
diff --git a/Lib/lib2to3/tests/data/different_encoding.py b/Lib/lib2to3/tests/data/different_encoding.py
--- a/Lib/lib2to3/tests/data/different_encoding.py
+++ b/Lib/lib2to3/tests/data/different_encoding.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 print u'ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ'
 
diff --git a/Lib/lib2to3/tests/pytree_idempotency.py b/Lib/lib2to3/tests/pytree_idempotency.py
old mode 100755
new mode 100644
--- a/Lib/lib2to3/tests/pytree_idempotency.py
+++ b/Lib/lib2to3/tests/pytree_idempotency.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # Copyright 2006 Google, Inc. All Rights Reserved.
 # Licensed to PSF under a Contributor Agreement.
 
diff --git a/Lib/mailbox.py b/Lib/mailbox.py
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Read/write support for Maildir, mbox, MH, Babyl, and MMDF mailboxes."""
 
 # Notes for authors of new mailbox subclasses:
diff --git a/Lib/pdb.py b/Lib/pdb.py
old mode 100755
new mode 100644
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """
 The Python Debugger Pdb
 =======================
diff --git a/Lib/platform.py b/Lib/platform.py
old mode 100755
new mode 100644
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 """ This module tries to retrieve as much platform-identifying data as
     possible. It makes this information available via function APIs.
 
diff --git a/Lib/profile.py b/Lib/profile.py
old mode 100755
new mode 100644
--- a/Lib/profile.py
+++ b/Lib/profile.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-#
 # Class for profiling python code. rev 1.0  6/2/94
 #
 # Written by James Roskind
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
old mode 100755
new mode 100644
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """Generate Python documentation in HTML or text for interactive use.
 
 In the Python interpreter, do "from pydoc import help" to provide online
diff --git a/Lib/quopri.py b/Lib/quopri.py
old mode 100755
new mode 100644
--- a/Lib/quopri.py
+++ b/Lib/quopri.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Conversions to/from quoted-printable transport encoding as per RFC 1521."""
 
 # (Dec 1991 version).
diff --git a/Lib/smtpd.py b/Lib/smtpd.py
old mode 100755
new mode 100644
--- a/Lib/smtpd.py
+++ b/Lib/smtpd.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """An RFC 2821 smtp proxy.
 
 Usage: %(program)s [options] [localhost:localport [remotehost:remoteport]]
diff --git a/Lib/smtplib.py b/Lib/smtplib.py
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 '''SMTP/ESMTP client class.
 
 This should follow RFC 821 (SMTP), RFC 1869 (ESMTP), RFC 2554 (SMTP
diff --git a/Lib/symbol.py b/Lib/symbol.py
old mode 100755
new mode 100644
--- a/Lib/symbol.py
+++ b/Lib/symbol.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Non-terminal symbols of Python grammar (from "graminit.h")."""
 
 #  This file is automatically generated; please don't muck it up!
diff --git a/Lib/tabnanny.py b/Lib/tabnanny.py
old mode 100755
new mode 100644
--- a/Lib/tabnanny.py
+++ b/Lib/tabnanny.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """The Tab Nanny despises ambiguous indentation.  She knows no mercy.
 
 tabnanny -- Detection of ambiguous indentation
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 #-------------------------------------------------------------------
 # tarfile.py
 #-------------------------------------------------------------------
diff --git a/Lib/test/crashers/recursive_call.py b/Lib/test/crashers/recursive_call.py
--- a/Lib/test/crashers/recursive_call.py
+++ b/Lib/test/crashers/recursive_call.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # No bug report AFAIK, mail on python-dev on 2006-01-10
 
 # This is a "won't fix" case.  It is known that setting a high enough
diff --git a/Lib/test/curses_tests.py b/Lib/test/curses_tests.py
--- a/Lib/test/curses_tests.py
+++ b/Lib/test/curses_tests.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # $Id: ncurses.py 36559 2004-07-18 05:56:09Z tim_one $
 #
 # Interactive test suite for the curses module.
diff --git a/Lib/test/pystone.py b/Lib/test/pystone.py
old mode 100755
new mode 100644
--- a/Lib/test/pystone.py
+++ b/Lib/test/pystone.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """
 "PYSTONE" Benchmark Program
 
diff --git a/Lib/test/re_tests.py b/Lib/test/re_tests.py
old mode 100755
new mode 100644
--- a/Lib/test/re_tests.py
+++ b/Lib/test/re_tests.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- mode: python -*-
 
 # Re test suite and benchmark suite v1.5
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
old mode 100755
new mode 100644
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """
 Usage:
 
diff --git a/Lib/test/test___future__.py b/Lib/test/test___future__.py
--- a/Lib/test/test___future__.py
+++ b/Lib/test/test___future__.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 import unittest
 from test import support
 import __future__
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
old mode 100755
new mode 100644
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test the arraymodule.
    Roger E. Masse
 """
diff --git a/Lib/test/test_binhex.py b/Lib/test/test_binhex.py
old mode 100755
new mode 100644
--- a/Lib/test/test_binhex.py
+++ b/Lib/test/test_binhex.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test script for the binhex C module
 
    Uses the mechanism of the python binhex module
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 from test import support
 from test.support import TESTFN, bigmemtest, _4G
 
diff --git a/Lib/test/test_cmd.py b/Lib/test/test_cmd.py
--- a/Lib/test/test_cmd.py
+++ b/Lib/test/test_cmd.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """
 Test script for the 'cmd' module
 Original by Michael Schneider
diff --git a/Lib/test/test_codecencodings_cn.py b/Lib/test/test_codecencodings_cn.py
--- a/Lib/test/test_codecencodings_cn.py
+++ b/Lib/test/test_codecencodings_cn.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecencodings_cn.py
 #   Codec encoding tests for PRC encodings.
 #
diff --git a/Lib/test/test_codecencodings_hk.py b/Lib/test/test_codecencodings_hk.py
--- a/Lib/test/test_codecencodings_hk.py
+++ b/Lib/test/test_codecencodings_hk.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecencodings_hk.py
 #   Codec encoding tests for HongKong encodings.
 #
diff --git a/Lib/test/test_codecencodings_iso2022.py b/Lib/test/test_codecencodings_iso2022.py
--- a/Lib/test/test_codecencodings_iso2022.py
+++ b/Lib/test/test_codecencodings_iso2022.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-#
 # Codec encoding tests for ISO 2022 encodings.
 
 from test import support
diff --git a/Lib/test/test_codecencodings_jp.py b/Lib/test/test_codecencodings_jp.py
--- a/Lib/test/test_codecencodings_jp.py
+++ b/Lib/test/test_codecencodings_jp.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecencodings_jp.py
 #   Codec encoding tests for Japanese encodings.
 #
diff --git a/Lib/test/test_codecencodings_kr.py b/Lib/test/test_codecencodings_kr.py
--- a/Lib/test/test_codecencodings_kr.py
+++ b/Lib/test/test_codecencodings_kr.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecencodings_kr.py
 #   Codec encoding tests for ROK encodings.
 #
diff --git a/Lib/test/test_codecencodings_tw.py b/Lib/test/test_codecencodings_tw.py
--- a/Lib/test/test_codecencodings_tw.py
+++ b/Lib/test/test_codecencodings_tw.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecencodings_tw.py
 #   Codec encoding tests for ROC encodings.
 #
diff --git a/Lib/test/test_codecmaps_cn.py b/Lib/test/test_codecmaps_cn.py
--- a/Lib/test/test_codecmaps_cn.py
+++ b/Lib/test/test_codecmaps_cn.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecmaps_cn.py
 #   Codec mapping tests for PRC encodings
 #
diff --git a/Lib/test/test_codecmaps_hk.py b/Lib/test/test_codecmaps_hk.py
--- a/Lib/test/test_codecmaps_hk.py
+++ b/Lib/test/test_codecmaps_hk.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecmaps_hk.py
 #   Codec mapping tests for HongKong encodings
 #
diff --git a/Lib/test/test_codecmaps_jp.py b/Lib/test/test_codecmaps_jp.py
--- a/Lib/test/test_codecmaps_jp.py
+++ b/Lib/test/test_codecmaps_jp.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecmaps_jp.py
 #   Codec mapping tests for Japanese encodings
 #
diff --git a/Lib/test/test_codecmaps_kr.py b/Lib/test/test_codecmaps_kr.py
--- a/Lib/test/test_codecmaps_kr.py
+++ b/Lib/test/test_codecmaps_kr.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecmaps_kr.py
 #   Codec mapping tests for ROK encodings
 #
diff --git a/Lib/test/test_codecmaps_tw.py b/Lib/test/test_codecmaps_tw.py
--- a/Lib/test/test_codecmaps_tw.py
+++ b/Lib/test/test_codecmaps_tw.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_codecmaps_tw.py
 #   Codec mapping tests for ROC encodings
 #
diff --git a/Lib/test/test_dbm.py b/Lib/test/test_dbm.py
--- a/Lib/test/test_dbm.py
+++ b/Lib/test/test_dbm.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test script for the dbm.open function based on testdumbdbm.py"""
 
 import os
diff --git a/Lib/test/test_dbm_dumb.py b/Lib/test/test_dbm_dumb.py
--- a/Lib/test/test_dbm_dumb.py
+++ b/Lib/test/test_dbm_dumb.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test script for the dumbdbm module
    Original by Roger E. Masse
 """
diff --git a/Lib/test/test_dbm_gnu.py b/Lib/test/test_dbm_gnu.py
old mode 100755
new mode 100644
diff --git a/Lib/test/test_dbm_ndbm.py b/Lib/test/test_dbm_ndbm.py
old mode 100755
new mode 100644
diff --git a/Lib/test/test_eof.py b/Lib/test/test_eof.py
--- a/Lib/test/test_eof.py
+++ b/Lib/test/test_eof.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """test script for a few new invalid token catches"""
 
 import unittest
diff --git a/Lib/test/test_errno.py b/Lib/test/test_errno.py
old mode 100755
new mode 100644
--- a/Lib/test/test_errno.py
+++ b/Lib/test/test_errno.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test the errno module
    Roger E. Masse
 """
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py
--- a/Lib/test/test_gzip.py
+++ b/Lib/test/test_gzip.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Test script for the gzip module.
 """
 
diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py
--- a/Lib/test/test_keywordonlyarg.py
+++ b/Lib/test/test_keywordonlyarg.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 """Unit tests for the keyword only argument specified in PEP 3102."""
 
 __author__ = "Jiwon Seo"
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-#
 # Copyright 2001-2011 by Vinay Sajip. All Rights Reserved.
 #
 # Permission to use, copy, modify, and distribute this software and its
diff --git a/Lib/test/test_marshal.py b/Lib/test/test_marshal.py
--- a/Lib/test/test_marshal.py
+++ b/Lib/test/test_marshal.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 from test import support
 import marshal
 import sys
diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
--- a/Lib/test/test_multibytecodec.py
+++ b/Lib/test/test_multibytecodec.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_multibytecodec.py
 #   Unit test for multibytecodec itself
 #
diff --git a/Lib/test/test_multibytecodec_support.py b/Lib/test/test_multibytecodec_support.py
--- a/Lib/test/test_multibytecodec_support.py
+++ b/Lib/test/test_multibytecodec_support.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-#
 # test_multibytecodec_support.py
 #   Common Unittest Routines for CJK codecs
 #
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 #
 # Unit tests for the multiprocessing package
 #
diff --git a/Lib/test/test_popen.py b/Lib/test/test_popen.py
--- a/Lib/test/test_popen.py
+++ b/Lib/test/test_popen.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Basic tests for os.popen()
 
   Particularly useful for platforms that fake popen.
diff --git a/Lib/test/test_random.py b/Lib/test/test_random.py
--- a/Lib/test/test_random.py
+++ b/Lib/test/test_random.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 import random
 import time
diff --git a/Lib/test/test_sched.py b/Lib/test/test_sched.py
--- a/Lib/test/test_sched.py
+++ b/Lib/test/test_sched.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 import sched
 import time
 import unittest
diff --git a/Lib/test/test_smtpnet.py b/Lib/test/test_smtpnet.py
--- a/Lib/test/test_smtpnet.py
+++ b/Lib/test/test_smtpnet.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 from test import support
 import smtplib
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 from test import support
 
diff --git a/Lib/test/test_support.py b/Lib/test/test_support.py
--- a/Lib/test/test_support.py
+++ b/Lib/test/test_support.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-
 import sys
 import os
 import unittest
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py
--- a/Lib/test/test_tcl.py
+++ b/Lib/test/test_tcl.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 import sys
 import os
diff --git a/Lib/test/test_urllib2_localnet.py b/Lib/test/test_urllib2_localnet.py
--- a/Lib/test/test_urllib2_localnet.py
+++ b/Lib/test/test_urllib2_localnet.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import os
 import email
 import urllib.parse
diff --git a/Lib/test/test_urllib2net.py b/Lib/test/test_urllib2net.py
--- a/Lib/test/test_urllib2net.py
+++ b/Lib/test/test_urllib2net.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 from test import support
 from test.test_urllib2 import sanepathname2url
diff --git a/Lib/test/test_urllibnet.py b/Lib/test/test_urllibnet.py
--- a/Lib/test/test_urllibnet.py
+++ b/Lib/test/test_urllibnet.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import unittest
 from test import support
 
diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 from test import support
 import unittest
 import urllib.parse
diff --git a/Lib/test/test_userstring.py b/Lib/test/test_userstring.py
old mode 100755
new mode 100644
--- a/Lib/test/test_userstring.py
+++ b/Lib/test/test_userstring.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # UserString is a wrapper around the native builtin string type.
 # UserString instances should behave similar to builtin string objects.
 
diff --git a/Lib/test/test_with.py b/Lib/test/test_with.py
--- a/Lib/test/test_with.py
+++ b/Lib/test/test_with.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 """Unit tests for the with statement specified in PEP 343."""
 
 
diff --git a/Lib/test/test_xmlrpc_net.py b/Lib/test/test_xmlrpc_net.py
--- a/Lib/test/test_xmlrpc_net.py
+++ b/Lib/test/test_xmlrpc_net.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import collections.abc
 import errno
 import socket
diff --git a/Lib/timeit.py b/Lib/timeit.py
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 """Tool for measuring execution time of small code snippets.
 
 This module avoids a number of common traps for measuring execution
diff --git a/Lib/token.py b/Lib/token.py
old mode 100755
new mode 100644
diff --git a/Lib/trace.py b/Lib/trace.py
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
 # err...  reserved and offered to the public under the terms of the
 # Python 2.2 license.
diff --git a/Lib/turtledemo/__main__.py b/Lib/turtledemo/__main__.py
old mode 100755
new mode 100644
--- a/Lib/turtledemo/__main__.py
+++ b/Lib/turtledemo/__main__.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 import sys
 import os
 
diff --git a/Lib/turtledemo/bytedesign.py b/Lib/turtledemo/bytedesign.py
--- a/Lib/turtledemo/bytedesign.py
+++ b/Lib/turtledemo/bytedesign.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_bytedesign.py
diff --git a/Lib/turtledemo/clock.py b/Lib/turtledemo/clock.py
--- a/Lib/turtledemo/clock.py
+++ b/Lib/turtledemo/clock.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: cp1252 -*-
 """       turtle-example-suite:
 
diff --git a/Lib/turtledemo/forest.py b/Lib/turtledemo/forest.py
--- a/Lib/turtledemo/forest.py
+++ b/Lib/turtledemo/forest.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """     turtlegraphics-example-suite:
 
              tdemo_forest.py
diff --git a/Lib/turtledemo/fractalcurves.py b/Lib/turtledemo/fractalcurves.py
--- a/Lib/turtledemo/fractalcurves.py
+++ b/Lib/turtledemo/fractalcurves.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_fractalCurves.py
diff --git a/Lib/turtledemo/lindenmayer.py b/Lib/turtledemo/lindenmayer.py
--- a/Lib/turtledemo/lindenmayer.py
+++ b/Lib/turtledemo/lindenmayer.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
         xtx_lindenmayer_indian.py
diff --git a/Lib/turtledemo/minimal_hanoi.py b/Lib/turtledemo/minimal_hanoi.py
--- a/Lib/turtledemo/minimal_hanoi.py
+++ b/Lib/turtledemo/minimal_hanoi.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
          tdemo_minimal_hanoi.py
diff --git a/Lib/turtledemo/paint.py b/Lib/turtledemo/paint.py
--- a/Lib/turtledemo/paint.py
+++ b/Lib/turtledemo/paint.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_paint.py
diff --git a/Lib/turtledemo/peace.py b/Lib/turtledemo/peace.py
--- a/Lib/turtledemo/peace.py
+++ b/Lib/turtledemo/peace.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
               tdemo_peace.py
diff --git a/Lib/turtledemo/penrose.py b/Lib/turtledemo/penrose.py
--- a/Lib/turtledemo/penrose.py
+++ b/Lib/turtledemo/penrose.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       xturtle-example-suite:
 
           xtx_kites_and_darts.py
diff --git a/Lib/turtledemo/planet_and_moon.py b/Lib/turtledemo/planet_and_moon.py
--- a/Lib/turtledemo/planet_and_moon.py
+++ b/Lib/turtledemo/planet_and_moon.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
         tdemo_planets_and_moon.py
diff --git a/Lib/turtledemo/tree.py b/Lib/turtledemo/tree.py
--- a/Lib/turtledemo/tree.py
+++ b/Lib/turtledemo/tree.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """      turtle-example-suite:
 
              tdemo_tree.py
diff --git a/Lib/turtledemo/two_canvases.py b/Lib/turtledemo/two_canvases.py
--- a/Lib/turtledemo/two_canvases.py
+++ b/Lib/turtledemo/two_canvases.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 ## DEMONSTRATES USE OF 2 CANVASES, SO CANNOT BE RUN IN DEMOVIEWER!
 """turtle example: Using TurtleScreen and RawTurtle
 for drawing on two distinct canvases.
diff --git a/Lib/turtledemo/yinyang.py b/Lib/turtledemo/yinyang.py
--- a/Lib/turtledemo/yinyang.py
+++ b/Lib/turtledemo/yinyang.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_yinyang.py
diff --git a/Lib/uu.py b/Lib/uu.py
old mode 100755
new mode 100644
--- a/Lib/uu.py
+++ b/Lib/uu.py
@@ -1,5 +1,3 @@
-#! /usr/bin/env python3
-
 # Copyright 1994 by Lance Ellinghouse
 # Cathedral City, California Republic, United States of America.
 #                        All Rights Reserved
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -1,4 +1,3 @@
-#! /usr/bin/env python3
 """Interfaces for launching and remotely controlling Web browsers."""
 # Maintained by Georg Brandl.