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标题：[python-chinese] ［新手问题］我这个程序有点问题，贴出来，请教一下！

楼主 2006年12月08日星期五 13:50

boyeestudio boyee118在gmail.com
星期五十二月 8 13:50:20 HKT 2006

ÏÂÃæµÄ³ÌÐòµÄ¹¦ÄÜÏàµ±ÓÚlinuxÏÂµÄÃüÁî£ºtail -f logfile.log
µ«ÊÇÏÔÊ¾Ê±£¬´òÓ¡ºÜ¶à¿ÕÐÐ£¬²»ÖªµÀfile.seek()ÈçºÎ¶¨Î»×îºóÒ»ÐÐ£¨ÕâÒ»ÐÐµÄ×Ö½ÚÊýÊÇ¸ö±äÊý£¬ËùÒÔ²»ºÃ¶¨Î»£©£¬ÄÄÎ»Ö¸µãÒ»ÏÂ£¡Ð»Ð»ÁË¡£

import os
import sys

class Tail:
    def __init__(self,inputstream):
        self.inputstream=inputstream

    def tail(self):
        self.inputstream.seek(0,2)     £££¿£¿
        line=self.inputstream.readline().strip()
        print line

if __name__=="__main__":
    if len(sys.argv)<=1:
        print "You must type a log file name"
        sys.exit()
    arg=file(sys.argv[1],'r+')
    while(arg):
        try:
            t=Tail(arg)
            t.tail()
        except KeyboardInterrupt:
            arg.close()
            print "File closed"
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黄冲

0楼 2006年12月12日星期二 10:54

=?GB2312?B?u8bBiA==?= huangchonggnu在gmail.com
星期二十二月 12 10:54:37 HKT 2006

ÈôÊÇÖ»¶Á×îºóÒ»ÐÐ£¬ÊÔÊÔreadlines()
lst=self.inputstream.readlines()
print lst[-1]


ÔÚ06-12-8£¬boyeestudio <boyee118在gmail.com> Ð´µÀ£º
>
> ÏÂÃæµÄ³ÌÐòµÄ¹¦ÄÜÏàµ±ÓÚlinuxÏÂµÄÃüÁî£ºtail -f logfile.log
> µ«ÊÇÏÔÊ¾Ê±£¬´òÓ¡ºÜ¶à¿ÕÐÐ£¬²»ÖªµÀfile.seek()ÈçºÎ¶¨Î»×îºóÒ»ÐÐ£¨ÕâÒ»ÐÐµÄ×Ö½ÚÊýÊÇ¸ö±äÊý£¬ËùÒÔ²»ºÃ¶¨Î»£©£¬ÄÄÎ»Ö¸µãÒ»ÏÂ£¡Ð»Ð»ÁË¡£
>
> import os
> import sys
>
> class Tail:
>     def __init__(self,inputstream):
>         self.inputstream=inputstream
>
>     def tail(self):
>         self.inputstream.seek(0,2)     £££¿£¿
>         line=self.inputstream.readline().strip()
>         print line
>
> if __name__=="__main__":
>     if len(sys.argv)<=1:
>         print "You must type a log file name"
>         sys.exit()
>     arg=file(sys.argv[1],'r+')
>     while(arg):
>         try:
>             t=Tail(arg)
>              t.tail()
>         except KeyboardInterrupt:
>             arg.close()
>             print "File closed"
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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徐继哲

0楼 2006年12月12日星期二 11:03

nmweizi nmweizi在163.com
星期二十二月 12 11:03:46 HKT 2006

python-chinese£¬ÄãºÃ
ÕâÑù¿ÉÒÔÁË¡£

#!/usr/bin/env python
import os
import sys
import time
class Tail:
    def __init__(self,inputstream):
        self.inputstream=inputstream
        self.inputstream.seek(0,2)
        
    def tail(self):
        #self.tell = self.inputstream.tell()
        line=self.inputstream.readline().strip()
        if line:
            print line
        
if __name__=="__main__":
    if len(sys.argv)<=1:
        print "You must type a log file name"
        sys.exit()
    arg=file(sys.argv[1])
    t = Tail(arg)
    while(arg):
        try:
            time.sleep(2)
            t.tail()
        except KeyboardInterrupt:
            arg.close()
            print "File closed"
            sys.exit(1)


nmweizi£¬nmweizi在163.com
2006-12-12 
----- Original Message ----- 
From: »ÆÁ 
To: python-chinese 
Sent: 2006-12-12, 10:54:37
Subject: Re: [python-chinese]£ÛÐÂÊÖÎÊÌâ£ÝÎÒÕâ¸ö³ÌÐòÓÐµãÎÊÌâ£¬Ìù³öÀ´£¬Çë½ÌÒ»ÏÂ£¡


ÈôÊÇÖ»¶Á×îºóÒ»ÐÐ£¬ÊÔÊÔreadlines()
lst=self.inputstream.readlines()
print lst[-1]



ÔÚ06-12-8£¬boyeestudio <boyee118在gmail.com > Ð´µÀ£º
ÏÂÃæµÄ³ÌÐòµÄ¹¦ÄÜÏàµ±ÓÚlinuxÏÂµÄÃüÁî£ºtail -f logfile.log
µ«ÊÇÏÔÊ¾Ê±£¬´òÓ¡ºÜ¶à¿ÕÐÐ£¬²»ÖªµÀfile.seek()ÈçºÎ¶¨Î»×îºóÒ»ÐÐ£¨ÕâÒ»ÐÐµÄ×Ö½ÚÊýÊÇ¸ö±äÊý£¬ËùÒÔ²»ºÃ¶¨Î»£©£¬ÄÄÎ»Ö¸µãÒ»ÏÂ£¡Ð»Ð»ÁË¡£ 

import os
import sys

class Tail:
    def __init__(self,inputstream):
        self.inputstream=inputstream 
        
    def tail(self):
        self.inputstream.seek(0,2)     £££¿£¿
        line=self.inputstream.readline().strip()
        print line
        
if __name__=="__main__": 
    if len(sys.argv)<=1:
        print "You must type a log file name"
        sys.exit()
    arg=file(sys.argv[1],'r+')
    while(arg):
        try:
            t=Tail(arg)
             t.tail()
        except KeyboardInterrupt:
            arg.close()
            print "File closed" 
_______________________________________________
python-chinese
Post: send python-chinese在lists.python.cn 
Subscribe: send subscribe to python-chinese-request在lists.python.cn
Unsubscribe: send unsubscribe to   python-chinese-request在lists.python.cn
Detail Info: http://python.cn/mailman/listinfo/python-chinese
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徐继哲

0楼 2006年12月12日星期二 12:39

boyeestudio boyee118在gmail.com
星期二十二月 12 12:39:25 HKT 2006

ÔÚ06-12-12£¬nmweizi <nmweizi在163.com> Ð´µÀ£º
>
>  python-chinese£¬ÄãºÃ
> ÕâÑù¿ÉÒÔÁË¡£
>
> #!/usr/bin/env python
> import os
> import sys
> import time
> class Tail:
>     def __init__(self,inputstream):
>         self.inputstream=inputstream
>         self.inputstream.seek(0,2)
>
>     def tail(self):
>         #self.tell = self.inputstream.tell()
>         line=self.inputstream.readline().strip()
>         if line:
>             print line
>
> if __name__=="__main__":
>     if len(sys.argv)<=1:
>         print "You must type a log file name"
>         sys.exit()
>     arg=file(sys.argv[1])
>     t = Tail(arg)
>     while(arg):
>         try:
>             time.sleep(2)
>             t.tail()
>         except KeyboardInterrupt:
>             arg.close()
>             print "File closed"
>             sys.exit(1)
>

Ð»Ð»nmweizi£¡

nmweizi£¬nmweizi在163.com<%3C%21--AID_FROMADDRESS_BEGIN--%3Enmweizi在163.com%3C%21--AID_FROMADDRESS_END--%3E>
> 2006-12-12
>
> ----- Original Message -----
> *From: *»ÆÁ <huangchonggnu在gmail.com>
> *To: *python-chinese <python-chinese在lists.python.cn>
> *Sent: *2006-12-12, 10:54:37
> *Subject: *Re: [python-chinese]£ÛÐÂÊÖÎÊÌâ£ÝÎÒÕâ¸ö³ÌÐòÓÐµãÎÊÌâ£¬Ìù³öÀ´£¬Çë½ÌÒ»ÏÂ£¡
>
>  ÈôÊÇÖ»¶Á×îºóÒ»ÐÐ£¬ÊÔÊÔreadlines()
> lst=self.inputstream.readlines()
> print lst[-1]
>
>
> ÔÚ06-12-8£¬boyeestudio <boyee118在gmail.com > Ð´µÀ£º
> >
> > ÏÂÃæµÄ³ÌÐòµÄ¹¦ÄÜÏàµ±ÓÚlinuxÏÂµÄÃüÁî£ºtail -f logfile.log
> > µ«ÊÇÏÔÊ¾Ê±£¬´òÓ¡ºÜ¶à¿ÕÐÐ£¬²»ÖªµÀfile.seek()ÈçºÎ¶¨Î»×îºóÒ»ÐÐ£¨ÕâÒ»ÐÐµÄ×Ö½ÚÊýÊÇ¸ö±äÊý£¬ËùÒÔ²»ºÃ¶¨Î»£©£¬ÄÄÎ»Ö¸µãÒ»ÏÂ£¡Ð»Ð»ÁË¡£
> >
> > import os
> > import sys
> >
> > class Tail:
> >     def __init__(self,inputstream):
> >         self.inputstream=inputstream
> >
> >     def tail(self):
> >         self.inputstream.seek(0,2)     £££¿£¿
> >         line=self.inputstream.readline().strip()
> >         print line
> >
> > if __name__=="__main__":
> >     if len(sys.argv)<=1:
> >         print "You must type a log file name"
> >         sys.exit()
> >     arg=file(sys.argv[1],'r+')
> >     while(arg):
> >         try:
> >             t=Tail(arg)
> >              t.tail()
> >         except KeyboardInterrupt:
> >             arg.close()
> >             print "File closed"
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese在lists.python.cn
> > Subscribe: send subscribe to python-chinese-request在lists.python.cn
> > Unsubscribe: send unsubscribe to
> > python-chinese-request在lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
> >
>
>
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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