Mixing Python And Bash

[Jeff Epler]

The bash manpage says:
    set [--abefhkmnptuvxBCHP] [-o option] [arg ...]
[...]
              -e      Exit  immediately if a simple command (see SHELL GRAMMAR
                      above) exits with a non-zero status.  The shell does not
                      exit  if  the  command that fails is part of an until or
                      while loop, part of an if statement, part of a && or  ││
                      list, or if the command’s return value is being inverted
                      via !.  A trap on ERR, if set, is  executed  before  the
                      shell exits.

So place "set -e" at the top of your script, and it will exit as soon as
the first "simple command" exits with a nonzero exit status.

Jeff
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