convert shebang lines: python -> python3

74 files changed, 74 insertions, 74 deletions

diff --git a/Demo/cgi/cgi1.py b/Demo/cgi/cgi1.py
index 842fef2541..b4154dfc67 100755
--- a/Demo/cgi/cgi1.py
+++ b/Demo/cgi/cgi1.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python3
 
 """CGI test 1 - check server setup."""
 
diff --git a/Demo/cgi/cgi2.py b/Demo/cgi/cgi2.py
index 1d5822c463..8aa57b37a7 100755
--- a/Demo/cgi/cgi2.py
+++ b/Demo/cgi/cgi2.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python3
 
 """CGI test 2 - basic use of cgi module."""
 
diff --git a/Demo/cgi/cgi3.py b/Demo/cgi/cgi3.py
index a3421b5b2d..de8ef65e49 100755
--- a/Demo/cgi/cgi3.py
+++ b/Demo/cgi/cgi3.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#!/usr/bin/env python3
 
 """CGI test 3 (persistent data)."""
 
diff --git a/Demo/comparisons/regextest.py b/Demo/comparisons/regextest.py
index d2c534d5ba..547ee0dd39 100755
--- a/Demo/comparisons/regextest.py
+++ b/Demo/comparisons/regextest.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # 1)  Regular Expressions Test
 #
diff --git a/Demo/comparisons/sortingtest.py b/Demo/comparisons/sortingtest.py
index f9ed854109..e826e81d65 100755
--- a/Demo/comparisons/sortingtest.py
+++ b/Demo/comparisons/sortingtest.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # 2)  Sorting Test
 #
diff --git a/Demo/comparisons/systemtest.py b/Demo/comparisons/systemtest.py
index e3d840eb12..8276333790 100755
--- a/Demo/comparisons/systemtest.py
+++ b/Demo/comparisons/systemtest.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # 3)  System Test
 #
diff --git a/Demo/curses/life.py b/Demo/curses/life.py
index ddff8fa173..06f969218b 100755
--- a/Demo/curses/life.py
+++ b/Demo/curses/life.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # life.py -- A curses-based version of Conway's Game of Life.
 # Contributed by AMK
 #
diff --git a/Demo/curses/ncurses.py b/Demo/curses/ncurses.py
index 0bdc1a97e6..dedde295fe 100644
--- a/Demo/curses/ncurses.py
+++ b/Demo/curses/ncurses.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # $Id$
 #
diff --git a/Demo/curses/rain.py b/Demo/curses/rain.py
index 9d46e6eb60..7cabb4fb82 100644
--- a/Demo/curses/rain.py
+++ b/Demo/curses/rain.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # $Id$
 #
diff --git a/Demo/curses/repeat.py b/Demo/curses/repeat.py
index 93372c5d9a..570f221edc 100755
--- a/Demo/curses/repeat.py
+++ b/Demo/curses/repeat.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """repeat [-i SECONDS] <shell-command>
 
diff --git a/Demo/curses/tclock.py b/Demo/curses/tclock.py
index 8058d9a420..cde0a937f9 100644
--- a/Demo/curses/tclock.py
+++ b/Demo/curses/tclock.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # $Id$
 #
diff --git a/Demo/distutils/test2to3/maintest.py b/Demo/distutils/test2to3/maintest.py
index 72a26ddea0..036dd4f00c 100644
--- a/Demo/distutils/test2to3/maintest.py
+++ b/Demo/distutils/test2to3/maintest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # The above line should get replaced with the path to the Python
 # interpreter; the block below should get 2to3-converted.
diff --git a/Demo/parser/test_parser.py b/Demo/parser/test_parser.py
index e4d557103e..7d6db6b6bc 100755
--- a/Demo/parser/test_parser.py
+++ b/Demo/parser/test_parser.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 #  (Force the script to use the latest build.)
 #
 #  test_parser.py
diff --git a/Demo/pdist/RCSProxy.py b/Demo/pdist/RCSProxy.py
index 7c3b24f8ad..b0a01ad7b6 100755
--- a/Demo/pdist/RCSProxy.py
+++ b/Demo/pdist/RCSProxy.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """RCS Proxy.
 
diff --git a/Demo/pdist/makechangelog.py b/Demo/pdist/makechangelog.py
index db66e8f6a9..dd90657d98 100755
--- a/Demo/pdist/makechangelog.py
+++ b/Demo/pdist/makechangelog.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Turn a pile of RCS log output into ChangeLog file entries.
 
diff --git a/Demo/pdist/rcvs.py b/Demo/pdist/rcvs.py
index 4e2532aa54..ff178b73c1 100755
--- a/Demo/pdist/rcvs.py
+++ b/Demo/pdist/rcvs.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Remote CVS -- command line interface"""
 
diff --git a/Demo/pdist/rrcs.py b/Demo/pdist/rrcs.py
index 647ecc5c05..9e246b8014 100755
--- a/Demo/pdist/rrcs.py
+++ b/Demo/pdist/rrcs.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 "Remote RCS -- command line interface"
 
diff --git a/Demo/pysvr/pysvr.py b/Demo/pysvr/pysvr.py
index 3e94dbe05c..578e99cee7 100755
--- a/Demo/pysvr/pysvr.py
+++ b/Demo/pysvr/pysvr.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """A multi-threaded telnet-like server that gives a Python prompt.
 
diff --git a/Demo/scripts/beer.py b/Demo/scripts/beer.py
index 8135509522..56eec7b0cb 100755
--- a/Demo/scripts/beer.py
+++ b/Demo/scripts/beer.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # By GvR, demystified after a version by Fredrik Lundh.
 
diff --git a/Demo/scripts/eqfix.py b/Demo/scripts/eqfix.py
index 47c00d3b6d..8d0c8dfe73 100755
--- a/Demo/scripts/eqfix.py
+++ b/Demo/scripts/eqfix.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Fix Python source files to use the new equality test operator, i.e.,
 #       if x = y: ...
diff --git a/Demo/scripts/fact.py b/Demo/scripts/fact.py
index 71fcda2ed0..2a3bef23c4 100755
--- a/Demo/scripts/fact.py
+++ b/Demo/scripts/fact.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Factorize numbers.
 # The algorithm is not efficient, but easy to understand.
diff --git a/Demo/scripts/find-uname.py b/Demo/scripts/find-uname.py
index 1902423db7..b6ec1b6d79 100755
--- a/Demo/scripts/find-uname.py
+++ b/Demo/scripts/find-uname.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 For each argument on the command line, look for it in the set of all Unicode
diff --git a/Demo/scripts/from.py b/Demo/scripts/from.py
index 323e68474f..c8a9346423 100755
--- a/Demo/scripts/from.py
+++ b/Demo/scripts/from.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Print From and Subject of messages in $MAIL.
 # Extension to multiple mailboxes and other bells & whistles are left
diff --git a/Demo/scripts/lpwatch.py b/Demo/scripts/lpwatch.py
index 90b3ecf0ed..01d9fea833 100755
--- a/Demo/scripts/lpwatch.py
+++ b/Demo/scripts/lpwatch.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Watch line printer queue(s).
 # Intended for BSD 4.3 lpq.
diff --git a/Demo/scripts/makedir.py b/Demo/scripts/makedir.py
index 7095868afc..a14e848f3b 100755
--- a/Demo/scripts/makedir.py
+++ b/Demo/scripts/makedir.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Like mkdir, but also make intermediate directories if necessary.
 # It is not an error if the given directory already exists (as long
diff --git a/Demo/scripts/markov.py b/Demo/scripts/markov.py
index 990c972e04..7c08bdba67 100755
--- a/Demo/scripts/markov.py
+++ b/Demo/scripts/markov.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 class Markov:
     def __init__(self, histsize, choice):
diff --git a/Demo/scripts/mboxconvert.py b/Demo/scripts/mboxconvert.py
index 2e44f06866..cb3ed89cec 100755
--- a/Demo/scripts/mboxconvert.py
+++ b/Demo/scripts/mboxconvert.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Convert  MH directories (1 message per file) or MMDF mailboxes (4x^A
 # delimited) to unix mailbox (From ... delimited) on stdout.
diff --git a/Demo/scripts/morse.py b/Demo/scripts/morse.py
index 5aacaa1e78..c2f408fb30 100755
--- a/Demo/scripts/morse.py
+++ b/Demo/scripts/morse.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # DAH should be three DOTs.
 # Space between DOTs and DAHs should be one DOT.
diff --git a/Demo/scripts/newslist.py b/Demo/scripts/newslist.py
index 9cea1b4d20..b345f2effe 100755
--- a/Demo/scripts/newslist.py
+++ b/Demo/scripts/newslist.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 #######################################################################
 # Newslist  $Revision$
 #
diff --git a/Demo/scripts/pi.py b/Demo/scripts/pi.py
index 0740cd02a4..248f81f967 100755
--- a/Demo/scripts/pi.py
+++ b/Demo/scripts/pi.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Print digits of pi forever.
 #
diff --git a/Demo/scripts/pp.py b/Demo/scripts/pp.py
index 2c948f75db..87b9d8f0c2 100755
--- a/Demo/scripts/pp.py
+++ b/Demo/scripts/pp.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Emulate some Perl command line options.
 # Usage: pp [-a] [-c] [-d] [-e scriptline] [-F fieldsep] [-n] [-p] [file] ...
diff --git a/Demo/scripts/primes.py b/Demo/scripts/primes.py
index d296f0ef38..c994623e9c 100755
--- a/Demo/scripts/primes.py
+++ b/Demo/scripts/primes.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Print prime numbers in a given range
 
diff --git a/Demo/scripts/queens.py b/Demo/scripts/queens.py
index 726433c551..ffd4bea3a4 100755
--- a/Demo/scripts/queens.py
+++ b/Demo/scripts/queens.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """N queens problem.
 
diff --git a/Demo/scripts/script.py b/Demo/scripts/script.py
index b490b17924..a815a35a58 100755
--- a/Demo/scripts/script.py
+++ b/Demo/scripts/script.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # script.py -- Make typescript of terminal session.
 # Usage:
diff --git a/Demo/scripts/unbirthday.py b/Demo/scripts/unbirthday.py
index af58f8f286..b3c7d23484 100755
--- a/Demo/scripts/unbirthday.py
+++ b/Demo/scripts/unbirthday.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Calculate your unbirthday count (see Alice in Wonderland).
 # This is defined as the number of days from your birth until today
diff --git a/Demo/scripts/update.py b/Demo/scripts/update.py
index d49e4b39c6..49c09d81a7 100755
--- a/Demo/scripts/update.py
+++ b/Demo/scripts/update.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Update a bunch of files according to a script.
 # The input file contains lines of the form <filename>:<lineno>:<text>,
diff --git a/Demo/sockets/echosvr.py b/Demo/sockets/echosvr.py
index 7de63915bf..6f7030e5bc 100755
--- a/Demo/sockets/echosvr.py
+++ b/Demo/sockets/echosvr.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Python implementation of an 'echo' tcp server: echo all data it receives.
 #
diff --git a/Demo/sockets/finger.py b/Demo/sockets/finger.py
index e8b9ed2b08..4d493917ab 100755
--- a/Demo/sockets/finger.py
+++ b/Demo/sockets/finger.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Python interface to the Internet finger daemon.
 #
diff --git a/Demo/sockets/gopher.py b/Demo/sockets/gopher.py
index c287319c2e..bd29ec0d83 100755
--- a/Demo/sockets/gopher.py
+++ b/Demo/sockets/gopher.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # A simple gopher client.
 #
diff --git a/Demo/sockets/mcast.py b/Demo/sockets/mcast.py
index b7f85567aa..6ce7c6d406 100755
--- a/Demo/sockets/mcast.py
+++ b/Demo/sockets/mcast.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Send/receive UDP multicast packets.
 # Requires that your OS kernel supports IP multicast.
diff --git a/Demo/sockets/rpython.py b/Demo/sockets/rpython.py
index b654dc270e..7dcf979440 100755
--- a/Demo/sockets/rpython.py
+++ b/Demo/sockets/rpython.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Remote python client.
 # Execute Python commands remotely and send output back.
diff --git a/Demo/sockets/rpythond.py b/Demo/sockets/rpythond.py
index d745cc7ca0..e244d6cbc1 100755
--- a/Demo/sockets/rpythond.py
+++ b/Demo/sockets/rpythond.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Remote python server.
 # Execute Python commands remotely and send output back.
diff --git a/Demo/sockets/telnet.py b/Demo/sockets/telnet.py
index 038036ffc6..fb36faf82e 100755
--- a/Demo/sockets/telnet.py
+++ b/Demo/sockets/telnet.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Minimal interface to the Internet telnet protocol.
 #
diff --git a/Demo/sockets/throughput.py b/Demo/sockets/throughput.py
index 64244aaaf5..59543160e5 100755
--- a/Demo/sockets/throughput.py
+++ b/Demo/sockets/throughput.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Test network throughput.
 #
diff --git a/Demo/sockets/udpecho.py b/Demo/sockets/udpecho.py
index 9966fd86a4..6983a1f7cb 100755
--- a/Demo/sockets/udpecho.py
+++ b/Demo/sockets/udpecho.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Client and server for udp (datagram) echo.
 #
diff --git a/Demo/tkinter/guido/MimeViewer.py b/Demo/tkinter/guido/MimeViewer.py
index 11701cd0f2..b957c85965 100755
--- a/Demo/tkinter/guido/MimeViewer.py
+++ b/Demo/tkinter/guido/MimeViewer.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # View a single MIME multipart message.
 # Display each part as a box.
diff --git a/Demo/tkinter/guido/canvasevents.py b/Demo/tkinter/guido/canvasevents.py
index aeb0eb1d62..e5d27cc06d 100644
--- a/Demo/tkinter/guido/canvasevents.py
+++ b/Demo/tkinter/guido/canvasevents.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 from tkinter import *
 from Canvas import Oval, Group, CanvasText
diff --git a/Demo/tkinter/guido/dialog.py b/Demo/tkinter/guido/dialog.py
index 1832ba481b..f16029c476 100755
--- a/Demo/tkinter/guido/dialog.py
+++ b/Demo/tkinter/guido/dialog.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # A Python function that generates dialog boxes with a text message,
 # optional bitmap, and any number of buttons.
diff --git a/Demo/tkinter/guido/electrons.py b/Demo/tkinter/guido/electrons.py
index e3bf468787..6079c0449c 100755
--- a/Demo/tkinter/guido/electrons.py
+++ b/Demo/tkinter/guido/electrons.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Simulate "electrons" migrating across the screen.
 # An optional bitmap file in can be in the background.
diff --git a/Demo/tkinter/guido/kill.py b/Demo/tkinter/guido/kill.py
index 36caba6be2..dd01a2d482 100755
--- a/Demo/tkinter/guido/kill.py
+++ b/Demo/tkinter/guido/kill.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 # Tkinter interface to Linux `kill' command.
 
 from tkinter import *
diff --git a/Demo/tkinter/guido/mbox.py b/Demo/tkinter/guido/mbox.py
index 45c384e66c..299999cffb 100755
--- a/Demo/tkinter/guido/mbox.py
+++ b/Demo/tkinter/guido/mbox.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Scan MH folder, display results in window
 
diff --git a/Demo/tkinter/guido/newmenubardemo.py b/Demo/tkinter/guido/newmenubardemo.py
index 51c4e64771..09ac5668f6 100644
--- a/Demo/tkinter/guido/newmenubardemo.py
+++ b/Demo/tkinter/guido/newmenubardemo.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Play with the new Tk 8.0 toplevel menu option."""
 
diff --git a/Demo/tkinter/guido/rmt.py b/Demo/tkinter/guido/rmt.py
index 7b3f700e19..a3f430ea74 100755
--- a/Demo/tkinter/guido/rmt.py
+++ b/Demo/tkinter/guido/rmt.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # A Python program implementing rmt, an application for remotely
 # controlling other Tk applications.
diff --git a/Demo/tkinter/guido/solitaire.py b/Demo/tkinter/guido/solitaire.py
index b2a2a667f1..375bd031b7 100755
--- a/Demo/tkinter/guido/solitaire.py
+++ b/Demo/tkinter/guido/solitaire.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Solitaire game, much like the one that comes with MS Windows.
 
diff --git a/Demo/tkinter/guido/sortvisu.py b/Demo/tkinter/guido/sortvisu.py
index 0c71fc94f7..1e4165db4d 100644
--- a/Demo/tkinter/guido/sortvisu.py
+++ b/Demo/tkinter/guido/sortvisu.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """Sorting algorithms visualizer using Tkinter.
 
diff --git a/Demo/tkinter/guido/svkill.py b/Demo/tkinter/guido/svkill.py
index 0dd9f954eb..4ed88add69 100755
--- a/Demo/tkinter/guido/svkill.py
+++ b/Demo/tkinter/guido/svkill.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Tkinter interface to SYSV `ps' and `kill' commands.
 
diff --git a/Demo/tkinter/guido/tkman.py b/Demo/tkinter/guido/tkman.py
index 52b6d03904..4fc04884fe 100755
--- a/Demo/tkinter/guido/tkman.py
+++ b/Demo/tkinter/guido/tkman.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Tk man page browser -- currently only shows the Tcl/Tk man pages
 
diff --git a/Demo/turtle/tdemo_I_dontlike_tiltdemo.py b/Demo/turtle/tdemo_I_dontlike_tiltdemo.py
index 1d8652c888..1e5c440332 100644
--- a/Demo/turtle/tdemo_I_dontlike_tiltdemo.py
+++ b/Demo/turtle/tdemo_I_dontlike_tiltdemo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
      tdemo-I_dont_like_tiltdemo.py
diff --git a/Demo/turtle/tdemo_bytedesign.py b/Demo/turtle/tdemo_bytedesign.py
index 2e2ac624a0..96118b32df 100644
--- a/Demo/turtle/tdemo_bytedesign.py
+++ b/Demo/turtle/tdemo_bytedesign.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_bytedesign.py
diff --git a/Demo/turtle/tdemo_clock.py b/Demo/turtle/tdemo_clock.py
index e186c38497..a0d157ba49 100644
--- a/Demo/turtle/tdemo_clock.py
+++ b/Demo/turtle/tdemo_clock.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 # -*- coding: cp1252 -*-
 """       turtle-example-suite:
 
diff --git a/Demo/turtle/tdemo_forest.py b/Demo/turtle/tdemo_forest.py
index 01fa1863dc..a837d844c9 100644
--- a/Demo/turtle/tdemo_forest.py
+++ b/Demo/turtle/tdemo_forest.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """     turtlegraphics-example-suite:
 
              tdemo_forest.py
diff --git a/Demo/turtle/tdemo_fractalcurves.py b/Demo/turtle/tdemo_fractalcurves.py
index 247f16cae2..c49f8b88ea 100644
--- a/Demo/turtle/tdemo_fractalcurves.py
+++ b/Demo/turtle/tdemo_fractalcurves.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """      turtle-example-suite:
 
         tdemo_fractalCurves.py
diff --git a/Demo/turtle/tdemo_lindenmayer_indian.py b/Demo/turtle/tdemo_lindenmayer_indian.py
index bda5067a43..3925f25da6 100644
--- a/Demo/turtle/tdemo_lindenmayer_indian.py
+++ b/Demo/turtle/tdemo_lindenmayer_indian.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
         xtx_lindenmayer_indian.py
diff --git a/Demo/turtle/tdemo_minimal_hanoi.py b/Demo/turtle/tdemo_minimal_hanoi.py
index a8bdca74fa..cfb78dcac1 100644
--- a/Demo/turtle/tdemo_minimal_hanoi.py
+++ b/Demo/turtle/tdemo_minimal_hanoi.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
          tdemo_minimal_hanoi.py
diff --git a/Demo/turtle/tdemo_paint.py b/Demo/turtle/tdemo_paint.py
index 337a57c59d..68058ab6ac 100644
--- a/Demo/turtle/tdemo_paint.py
+++ b/Demo/turtle/tdemo_paint.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_paint.py
diff --git a/Demo/turtle/tdemo_peace.py b/Demo/turtle/tdemo_peace.py
index ea57069028..63cf7cc2e1 100644
--- a/Demo/turtle/tdemo_peace.py
+++ b/Demo/turtle/tdemo_peace.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
               tdemo_peace.py
diff --git a/Demo/turtle/tdemo_penrose.py b/Demo/turtle/tdemo_penrose.py
index f816f66e5d..f73c864b7b 100644
--- a/Demo/turtle/tdemo_penrose.py
+++ b/Demo/turtle/tdemo_penrose.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       xturtle-example-suite:
 
           xtx_kites_and_darts.py
diff --git a/Demo/turtle/tdemo_planet_and_moon.py b/Demo/turtle/tdemo_planet_and_moon.py
index 983449c096..14c4bbccc4 100644
--- a/Demo/turtle/tdemo_planet_and_moon.py
+++ b/Demo/turtle/tdemo_planet_and_moon.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
         tdemo_planets_and_moon.py
diff --git a/Demo/turtle/tdemo_tree.py b/Demo/turtle/tdemo_tree.py
index fda653ce1e..9c0b1f7bb4 100644
--- a/Demo/turtle/tdemo_tree.py
+++ b/Demo/turtle/tdemo_tree.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """      turtle-example-suite:
 
              tdemo_tree.py
diff --git a/Demo/turtle/tdemo_yinyang.py b/Demo/turtle/tdemo_yinyang.py
index 6508b44a54..11d1f47cae 100644
--- a/Demo/turtle/tdemo_yinyang.py
+++ b/Demo/turtle/tdemo_yinyang.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 """       turtle-example-suite:
 
             tdemo_yinyang.py
diff --git a/Demo/turtle/turtleDemo.py b/Demo/turtle/turtleDemo.py
index 36bf15c7e5..b5b99c0c1e 100644
--- a/Demo/turtle/turtleDemo.py
+++ b/Demo/turtle/turtleDemo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 import sys
 import os
 
diff --git a/Demo/turtle/turtledemo_two_canvases.py b/Demo/turtle/turtledemo_two_canvases.py
index 57ecb1dea6..d2d7188bd5 100644
--- a/Demo/turtle/turtledemo_two_canvases.py
+++ b/Demo/turtle/turtledemo_two_canvases.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/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/Demo/zlib/minigzip.py b/Demo/zlib/minigzip.py
index 28d8b2664d..b2af7f901e 100755
--- a/Demo/zlib/minigzip.py
+++ b/Demo/zlib/minigzip.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Demo program for zlib; it compresses or decompresses files, but *doesn't*
 # delete the original.  This doesn't support all of gzip's options.
 #
diff --git a/Demo/zlib/zlibdemo.py b/Demo/zlib/zlibdemo.py
index 53463dd6cd..52f71a097c 100755
--- a/Demo/zlib/zlibdemo.py
+++ b/Demo/zlib/zlibdemo.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Takes an optional filename, defaulting to this file itself.
 # Reads the file and compresses the content using level 1 and level 9