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 – #
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php中文网的支持。
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