Use Python to implement the command line alarm script instance and python command line

Use Python to implement the command line alarm script instance and python command line

Preface:

This article introduces how to create a simple alarm using python, which can be run on a command line terminal and takes minutes as a command line parameter, after this minute, the "wake-up" message will be printed and an alarm will be triggered. You can test it in 0 minutes. It will be executed immediately and the speaker control panel will be used to adjust the sound.

The following is a script:

# 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 sysimport stringfrom time import sleep sa = sys.argvlsa = 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

Summary:

This script has been used in my work and is very practical. Of course, to avoid affecting the work of other colleagues, you 'd better bring headphones. if the requirements are not high, in fact, the "wake-up" message printed from the terminal is enough reminder. The above is all about this article. I hope it will help you in your study and work. If you have any questions, please leave a message. Thank you for your support.