optparse example for Python 2.6

send_email26.py

#!/usr/bin/env python
import os
from optparse import OptionParser


def buildEmail():
    usage = "usage: %prog [options] arg"
    parser = OptionParser(usage)
    parser.add_option('-s', '--subject', action='store', dest='em_subject')
    parser.add_option('-b', '--body', action='store', dest='em_body')
    parser.add_option('-t', '--to', action='store', dest='em_to')
    parser.add_option('-f', '--from', action='store', dest='em_from')
    (options, args) = parser.parse_args()

    if any([options.em_from is None, options.em_to is None, options.em_subject is None, options.em_body is None]):
        print "Missing an Option"
        parser.print_help()
        exit(-1)
    else:
        sendEmail(options.em_from, options.em_to, options.em_subject, options.em_body)


def sendEmail(em_from, em_to, em_subject, em_body):
    sendmail_location = '/usr/sbin/sendmail'
    p = os.popen('%s -t' % sendmail_location, 'w')
    p.write('From: %s\n' % em_from)
    p.write('To: %s\n' % em_to)
    p.write('Subject: %s \n' % em_subject)
    p.write('\n')
    p.write(em_body)
    p.close()


def main():
    buildEmail()

if __name__ == '__main__':
    main()