parser.add_option("-f", "--file", dest="filename",
help="write report to FILE", metavar="FILE")
parser.add_option("-q", "--quiet",
- action="store_false", dest="verbose", default=1,
+ action="store_false", dest="verbose", default=True,
help="don't print status messages to stdout")
(options, args) = parser.parse_args()
\end{verbatim}
(All of these result in \code{options.filename == "outfile"} and
-\code{options.verbose == 0} ...just as you might expect.)
+\code{options.verbose == False}, just as you might expect.)
Even niftier, users can run one of
\begin{verbatim}
is parsed.
First, consider the verbose/quiet example. If we want
-\module{optparse} to set \var{verbose} to 1 unless \programopt{-q} is
-seen, then we can do this:
+\module{optparse} to set \var{verbose} to \code{True} unless
+\programopt{-q} is seen, then we can do this:
\begin{verbatim}
-parser.add_option("-v", action="store_true", dest="verbose", default=1)
+parser.add_option("-v", action="store_true", dest="verbose", default=True)
parser.add_option("-q", action="store_false", dest="verbose")
\end{verbatim}
\begin{verbatim}
parser.add_option("-v", action="store_true", dest="verbose")
-parser.add_option("-q", action="store_false", dest="verbose", default=1)
+parser.add_option("-q", action="store_false", dest="verbose", default=True)
\end{verbatim}
Those are equivalent because you're supplying a default value for the
Consider this:
\begin{verbatim}
-parser.add_option("-v", action="store_true", dest="verbose", default=0)
-parser.add_option("-q", action="store_false", dest="verbose", default=1)
+parser.add_option("-v", action="store_true", dest="verbose", default=False)
+parser.add_option("-q", action="store_false", dest="verbose", default=True)
\end{verbatim}
-Again, the default value for \var{verbose} will be 1: the last
+Again, the default value for \var{verbose} will be \code{True}: the last
default value supplied for any particular destination attribute is the
one that counts.
usage = "usage: %prog [options] arg1 arg2"
parser = OptionParser(usage=usage)
parser.add_option("-v", "--verbose",
- action="store_true", dest="verbose", default=1,
+ action="store_true", dest="verbose", default=True,
help="make lots of noise [default]")
parser.add_option("-q", "--quiet",
action="store_false", dest="verbose",
\term{store_true} [required: \var{dest}]
-A special case of ``store_const'' that stores a true value
-(specifically, the integer 1) to \var{dest}.
+A special case of ``store_const'' that stores \code{True} to \var{dest}.
\term{store_false} [required: \var{dest}]
-Like ``store_true'', but stores a false value (the integer 0).
+Like ``store_true'', but stores a \code{False}
Example: