想用python写个简单时钟

ajinn

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1^# ajinn 发表于 2008-05-31 10:43

想用python写个简单时钟

python输出当前时间比较简单，
我想每隔1秒刷新下时钟，不知道python下有什么简单的方法。

3227049

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2^# 3227049 发表于 2008-05-31 12:09

import time,sys
while True:
   s=time.ctime()
   length=len(s)
   sys.stdout.write(s)
   time.sleep(1)
   sys.stdout.write('\b'*length)

baif

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3^# baif 发表于 2008-05-31 14:46

QUOTE:

原帖由 ajinn 于 2008-5-31 10:43 发表
python输出当前时间比较简单，
我想每隔1秒刷新下时钟，不知道python下有什么简单的方法。

Programming Python, 3rd Edition
By Mark Lutz

[Copy to clipboard] [ - ]

CODE:

##########################################################################
# set and catch alarm timeout signals in Python; time.sleep doesn't play
# well with alarm (or signal in general in my Linux PC), so we call
# signal.pause here to do nothing until a signal is received;
##########################################################################

import sys, signal, time
def now(): return time.ctime(time.time( ))

def onSignal(signum, stackframe):                # python signal handler
print 'Got alarm', signum, 'at', now( )    # most handlers stay in effect

while 1:
print 'Setting at', now( )
signal.signal(signal.SIGALRM, onSignal)    # install signal handler
signal.alarm(5)                            # do signal in 5 seconds
signal.pause( )                            # wait for signals

cdkey51

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4^# cdkey51 发表于 2008-05-31 16:16

强人啊！！！！受教了

shengsiqn

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5^# shengsiqn 发表于 2008-06-03 11:10

呼呼~~很不错~~顶起~~~~~

baif

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6^# baif 发表于 2008-06-09 16:41

MainPage of signal(2)

QUOTE:

SIGNAL(2)                Linux Programmer’s Manual                SIGNAL(2)
...
...
DESCRIPTION
   The  behavior of signal() varies across Unix versions, and has also varied historically across different versions of Linux.  Avoid its use: use sigaction(2) instead.  See Portability
   below.
...

Release Notes of Python 2.0

QUOTE:

A wrapper API was added for signal() and sigaction(). Instead of either function, always use PyOS_getsig() to get a signal handler and PyOS_setsig() to set one. A new convenience typedef PyOS_sighandler_t is defined for the type of signal handlers.

Documentation of Python API 5.1 Operating System...

QUOTE:

PyOS_sighandler_t PyOS_setsig ( int i, PyOS_sighandler_t h)
Set the signal handler for signal i to be h; return the old signal handler. This is a thin wrapper around either sigaction() or signal(). Do not call those functions directly! PyOS_sighandler_t is a typedef alias for void (*)(int).

QUOTE:

原帖由 baif 于 2008-5-31 14:46 发表

Programming Python, 3rd Edition
By Mark Lutz

##########################################################################
# set and catch alarm timeout signals in Python; time.sleep do ...