convert shebang lines: python -> python3
diff --git a/Tools/webchecker/wcgui.py b/Tools/webchecker/wcgui.py
index 4ce613a..88d8f56 100755
--- a/Tools/webchecker/wcgui.py
+++ b/Tools/webchecker/wcgui.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
"""GUI interface to webchecker.
diff --git a/Tools/webchecker/webchecker.py b/Tools/webchecker/webchecker.py
index 651cf85..7c3124c 100755
--- a/Tools/webchecker/webchecker.py
+++ b/Tools/webchecker/webchecker.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
# Original code by Guido van Rossum; extensive changes by Sam Bayer,
# including code to check URL fragments.
diff --git a/Tools/webchecker/websucker.py b/Tools/webchecker/websucker.py
index 3bbdec3..8076af5 100755
--- a/Tools/webchecker/websucker.py
+++ b/Tools/webchecker/websucker.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
"""A variant on webchecker that creates a mirror copy of a remote site."""
diff --git a/Tools/webchecker/wsgui.py b/Tools/webchecker/wsgui.py
index b2223c4..032523b 100755
--- a/Tools/webchecker/wsgui.py
+++ b/Tools/webchecker/wsgui.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
"""Tkinter-based GUI for websucker.