使用python做一个闹钟_用Python写一个简单地闹钟

一、闹钟程序如下：

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