用Python实现命令行闹钟脚本实例

前言：

这篇文章给大家介绍了怎样用python创建一个简单的报警，它可以运行在命令行终端，它需要分钟做为命令行参数，在这个分钟后会打印"wake-up"消息，并响铃报警，你可以用0分钟来测试，它会立即执行，用扬声器控制面板调整声音。

以下是脚本：

    # alarm_clock.py

    # Description: A simple Python program to make the computer act 
    # like an alarm clock. Start it running from the command line 
    # with a command line argument specifying the duration in minutes 
    # after which to sound the alarm. It will sleep for that long, 
    # and then beep a few times. Use a duration of 0 to test the 
    # alarm immediiately, e.g. for checking that the volume is okay.

    # Author: Vasudev Ram - http://www.dancingbison.com

    import sys
    import string
    from time import sleep

    sa = sys.argv
    lsa = len(sys.argv)
    if lsa != 2:
      print "Usage: [ python ] alarm_clock.py duration_in_minutes"
      print "Example: [ python ] alarm_clock.py 10"
      print "Use a value of 0 minutes for testing the alarm immediately."
      print "Beeps a few times after the duration is over."
      print "Press Ctrl-C to terminate the alarm clock early."
      sys.exit(1)

    try:
      minutes = int(sa[1])
    except ValueError:
      print "Invalid numeric value (%s) for minutes" % sa[1]
      print "Should be an integer >= 0"
      sys.exit(1)

    if minutes < 0:
      print "Invalid value for minutes, should be >= 0"
      sys.exit(1)

    seconds = minutes * 60

    if minutes == 1:
      unit_word = " minute"
    else:
      unit_word = " minutes"

    try:
      if minutes > 0:
        print "Sleeping for " + str(minutes) + unit_word
        sleep(seconds)
      print "Wake up"
      for i in range(5):
        print chr(7),
        sleep(1)
    except KeyboardInterrupt:
      print "Interrupted by user"
      sys.exit(1)

    # EOF

总结：

这个脚本我工作中已经在使用了，非常实用，当然为避免影响其他同事工作，你最好带耳机，如果要求不高，其实从终端打印出的"wake-up"消息已经足够提醒的了。以上就是这篇文章的全部内容，希望对大家的学习和工作能带来一定的帮助，如果有疑问大家可以留言交流。谢谢大家对脚本之家的支持。