convert shebang lines: python -> python3
diff --git a/Demo/curses/life.py b/Demo/curses/life.py
index ddff8fa..06f9692 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 0bdc1a9..dedde29 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 9d46e6e..7cabb4f 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 93372c5..570f221 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 8058d9a..cde0a93 100644
--- a/Demo/curses/tclock.py
+++ b/Demo/curses/tclock.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
#
# $Id$
#