swc-installation-test-1.py: Give instructions for 'python command not found'

diff --git a/swc-installation-test-1.py b/swc-installation-test-1.py
index 38093201e5c311828cb1d57a4cf2d1c0eea40b66..f3b5f221f01b2fe3165f1e85d2ad02d5dac0a9c0 100755 (executable)
--- a/swc-installation-test-1.py
+++ b/swc-installation-test-1.py
@@ -16,9 +16,15 @@ How to get a command line:
 - On Linux, either use your login shell directly, or run one of a
   number of graphical terminals (e.g. 'xterm', 'gnome-terminal', ...).
 
-Run the script and follow the instructions it prints at the end.
+Run the script and follow the instructions it prints at the end.  If
+you see an error saying that the 'python' command was not found, than
+you may not have any version of Python installed.  See:
 
-This test is separate to avoid syntax errors parsing the more
+  http://www.python.org/download/releases/2.7.3/#download
+
+for installation instructions.
+
+This test is separate to avoid Python syntax errors parsing the more
 elaborate `swc-installation-test-2.py`.
 """