I was trying out optparse
and this is my initial script.
#!/usr/bin/env python
import os, sys
from optparse import OptionParser
parser = OptionParser()
usage = "usage: %prog [options] arg1 arg2"
parser.add_option("-d", "--dir", type="string",
help="List of directory",
dest="inDir", default=".")
parser.add_option("-m", "--month", type="int",
help="Numeric value of the month",
dest="mon")
options, arguments = parser.parse_args()
if options.inDir:
print os.listdir(options.inDir)
if options.mon:
print options.mon
def no_opt()
print "No option has been given!!"
Now, this is what I'm trying to do:
- If no argument is given with the option, it will take the "default" value.
i.e
myScript.py -d
will just list the present directory or-m
without any argument will take the current month as an argument. - For the "--month" only 01 to 12 are allowed as an argument
- Want to combine more than one option for performing different tasks i.e.
myScript.py -d this_dir -m 02
will do different thing than -d and -m as individual. - It will print "No option has been given!!" ONLY if no option is supplied with the script.
Are these doable? I did visit the doc.python.org site for possible answers, but as a python-beginner, I found myself lost in the pages. It's very much appreciated your help; thanks in advance. Cheers!!
Update: 16/01/11
I think I'm still missing something. This is the thing in my script now.
parser = OptionParser()
usage = "usage: %prog [options] arg1 arg2"
parser.add_option("-m", "--month", type="string",
help="select month from 01|02|...|12",
dest="mon", default=strftime("%m"))
parser.add_option("-v", "--vo", type="string",
help="select one of the supported VOs",
dest="vos")
options, arguments = parser.parse_args()
These are my goal:
- run the script without any option, will return
option.mon
[working] - run the script with -m option, with return
option.mon
[working] - run the script with ONLY -v option, will ONLY return
option.vos
[not working at all] - run the script with -m and -v opting, will do different thing [yet to get to the point]
When I run the script with only -m option, it's printing option.mon
first and then option.vos
, which I don't want at all. Really appreciate if anyone can put me in the right direction. Cheers!!
3rd Update
#!/bin/env python
from time import strftime
from calendar import month_abbr
from optparse import OptionParser
# Set the CL options
parser = OptionParser()
usage = "usage: %prog [options] arg1 arg2"
parser.add_option("-m", "--month", type="string",
help="select month from 01|02|...|12",
dest="mon", default=strftime("%m"))
parser.add_option("-u", "--user", type="string",
help="name of the user",
dest="vos")
options, arguments = parser.parse_args()
abbrMonth = tuple(month_abbr)[int(options.mon)]
if options.mon:
print "The month is: %s" % abbrMonth
if options.vos:
print "My name is: %s" % options.vos
if options.mon and options.vos:
print "I'm '%s' and this month is '%s'" % (options.vos,abbrMonth)
This is what the script returns when run with various options:
# ./test.py
The month is: Feb
#
# ./test.py -m 12
The month is: Dec
#
# ./test.py -m 3 -u Mac
The month is: Mar
My name is: Mac
I'm 'Mac' and this month is 'Mar'
#
# ./test.py -u Mac
The month is: Feb
My name is: Mac
I'm 'Mac' and this month is 'Feb'
I like to see only:
1. `I'm 'Mac' and this month is 'Mar'` - as *result #3*
2. `My name is: Mac` - as *result #4*
what am I doing wrong? Cheers!!
4th Update:
Answering to myself: this way I can get what I'm looking for but I'm still not impressed though.
#!/bin/env python
import os, sys
from time import strftime
from calendar import month_abbr
from optparse import OptionParser
def abbrMonth(m):
mn = tuple(month_abbr)[int(m)]
return mn
# Set the CL options
parser = OptionParser()
usage = "usage: %prog [options] arg1 arg2"
parser.add_option("-m", "--month", type="string",
help="select month from 01|02|...|12",
dest="mon")
parser.add_option("-u", "--user", type="string",
help="name of the user",
dest="vos")
(options, args) = parser.parse_args()
if options.mon and options.vos:
thisMonth = abbrMonth(options.mon)
print "I'm '%s' and this month is '%s'" % (options.vos, thisMonth)
sys.exit(0)
if not options.mon and not options.vos:
options.mon = strftime("%m")
if options.mon:
thisMonth = abbrMonth(options.mon)
print "The month is: %s" % thisMonth
if options.vos:
print "My name is: %s" % options.vos
and now this gives me exactly what I was looking for:
# ./test.py
The month is: Feb
# ./test.py -m 09
The month is: Sep
# ./test.py -u Mac
My name is: Mac
# ./test.py -m 3 -u Mac
I'm 'Mac' and this month is 'Mar'
Is this the only way of doing so? Doesn't look the "best way" to me. Cheers!!