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--- python:optparse [2010/03/15 12:04] – created tkbletsc
+++ python:optparse [2011/06/05 17:40] (current) – tkbletsc
@@ Line 1: / Line 1: @@
 <code python>
+from optparse import OptionParser
 things = {
         'this_thing': this,
@@ Line 6: / Line 8: @@
 }
 parser = OptionParser("Usage: %prog [options] <files ...>")
+# uncomment if you need to ignore options after the first argument, e.g. "mywrapper -x ls -l"
+# parser.disable_interspersed_args()
 parser.add_option("-n", "--number", dest="number", help="Quantity of things", metavar="NUM", type="int")
@@ Line 19: / Line 24: @@
         sys.exit(0)
-bits = options.bits
+num = options.number
 thing = things[option.thing]
 if options.verbose: verbose_write = lambda s: sys.stderr.write(s)
 else:               verbose_write = lambda s: 0
+</code>
+Shorter:
+<code=python>
+from optparse import OptionParser
+parser = OptionParser("Usage: %prog [options] <files ...>")
+parser.add_option("-n", "--number", dest="number", help="Quantity of things", metavar="NUM", type="int")
+parser.add_option("-h", "--host", dest="hostname", help="Hostname. Default: %default", metavar="HOST", default="localhost")
+parser.add_option("-s", "--sort", dest="sort", help="Sort by the given key.  One of: length,name.", metavar="KEY", type="choice", choices=['length','name'])
+parser.add_option("-v", "--verbose", dest="verbose", help="Print extra info.", action="store_true")
+(options, args) = parser.parse_args()
+if (len(args)<=0):
+        parser.print_help()
+        sys.exit(0)
 </code>