aNew = Activity()
        aNew.startTime = now
        aNew.description = aOld.description
        aNew.instanceTags = aOld.instanceTags
        print ("Resume %s" % aNew.description)
    else:
        aOld.endTime = now
        print ("Finished: %s" % aOld.description)
        print ("Previous activities:")
        for a in w[-3:]:
            print a
        print "Starting new activity."
        aNew = Activity()
        aNew.startTime = now
        print "Please write description:"
        aNew.description = sys.stdin.readline()[:-1]
        tagInput = True
        print "Do you want to add a tag ? (y/n) "
        while sys.stdin.readline() == 'y\n':
            tag = sys.stdin.readline()[:-1]
            try :
                aNew.addTag(tag)
            except TagError as exc:
                print "This tag is new. Confirm ? (y/n)"
                if sys.stdin.readline() == 'y\n':
                    aNew.addNewTag(tag)
            print "Do you want to add a tag ? (y/n) "
    w.add(aNew)
    w.write(filename)
    time.sleep(2.)
if __name__ == '__main__':
    w = readFile (filename, partition)
    if len(w) > 0 and w[-1].endTime == None :
        a = w[-1]
        a.endTime = dt.datetime.now()
        print ("Finished: %s" % a.description)
    else:
        if len(w) > 0:
            print ("Previous activities:")
            for a in w[-3:]:
                print a
        print "Starting new activity."
        a = Activity()
        print "Please write description:"
        a.description = sys.stdin.readline()[:-1]
        tagInput = True
        print "Do you want to add a tag ? (y/n) "
        while sys.stdin.readline() == 'y\n':
            tag = sys.stdin.readline()[:-1]
            try :
                a.addTag(tag)
            except TagError as exc:
                print "This tag is new. Confirm ? (y/n)"
                if sys.stdin.readline() == 'y\n':
                    a.addNewTag(tag)
            print "Do you want to add a tag ? (y/n) "
        w.add(a)
    w.write(filename)
    time.sleep(2.)