optparse main function, how to use the options inside

Question

I have a script with several functions and is too long to write here, but I am implementing optparse in a main function, which is:

def main():
    usage = "useage: %prog [options]"
    parser = OptionParser(usage)
    parser.add_option("-f", "--file", type="string", dest="filename", help="Get the name of the cabling file")
    parser.add_option("-i","--imod",dest="modules", help="write the modules in order to get some info",metavar="FILE")
    parser.add_option("-d","--data", type="string", dest="datas",default=True, help="write the options of the Info about a (set of) module(s)")
    parser.add_option("-j","--values", type="string", dest="infor",default=True, help="Modules associated to a(some) value(s)")
    parser.add_option("-k","--common", type="string", dest="common",default=True, help="Values with modules in common")

    (options, args) = parser.parse_args()

    if (options.filename is None):
        parser.error("No cabling filename was given!")


    #Info about modules    
    list1 = options.modules.split(',')
    list2 = options.datas.split(',')

    for i in list1:
        print "For module with DetId\n: %r " % (i)
    for j in ist2: 
        print  "%r is: %r" % (j,MyHVDict[i][j]) 
    if __name__=="__main__":
        main()

The script has some other functions, which depends on the input of the user (like a filename and the options defined in the main function) so how can i use the options I defined inside this main function, for example if everything is outside the main function I would just have to write options.filename or options.modules, anytime I need this, but inside the function I do not know what to do.

Answer 1

If your functions are called inside de main function you can pass options.what_you_need_in_function as an parameter.

def your_funcion(parameter_you_need):
    ...

def main():
    ...
    your_function(options.what_you_need_in_function)
    ...

BTW optparse module was deprecated, you can change to argparse module.