diff options
Diffstat (limited to 'Doc/lib/liboptparse.tex')
| -rw-r--r-- | Doc/lib/liboptparse.tex | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/Doc/lib/liboptparse.tex b/Doc/lib/liboptparse.tex index 0cfbb9c..f088f88 100644 --- a/Doc/lib/liboptparse.tex +++ b/Doc/lib/liboptparse.tex @@ -26,7 +26,7 @@ parser = OptionParser() 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() @@ -43,7 +43,7 @@ $ <yourscript> --quiet --file outfile \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} @@ -393,11 +393,11 @@ value for each destination, which is assigned before the command-line 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} @@ -405,7 +405,7 @@ Oddly enough, this is exactly equivalent: \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 @@ -415,11 +415,11 @@ destination (the \var{verbose} variable). 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. @@ -435,7 +435,7 @@ options: 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", @@ -864,12 +864,11 @@ values.verbose = 2 \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: |