filename = os.getenv('HOME')+"/.activity"
partition = os.getenv('HOME')+"/.activity-partition"

if __name__ == '__main__':
    now = dt.datetime.now()
    w = readFile (filename, partition)
    if len(w) == 0:
        raise RuntimeError(".activity file is empty.")
    aOld = w[-1]
    if aOld.endTime:
        #No pending activity, resume lattest one
        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':