[Tutor] file read - rewind? (original) (raw)

Nick Lunt nick at javacat.f2s.com
Mon Jul 26 18:27:59 CEST 2004

Hi Vicki,

I dont use the wx toolkit, but to rewind a file you want to use seek()

Eg

f = open('/nvmixer.log') for line in f: ... print line, ... [InstallShield Silent] Version=v6.00.000 File=Log File [ResponseResult] ResultCode=0 [Application] Name=NvMixer Version=1.50.000 Company=NVIDIA Corporation Lang=0009 f.tell() 176L f.seek(0) f.tell() 0L

filename.seek(0) will rewind the file back to the beginning. There's no easy way to rewind back to a certain line number that Im aware of.

filename.seek(0) filename.seek(10)

will now start reading from the 10th character, remembering that line chars start at 0.

Hope that helps Nick.

-----Original Message----- From: tutor-bounces at python.org [mailto:tutor-bounces at python.org]On Behalf Of vicki at thepenguin.org Sent: 26 July 2004 17:07 To: tutor at python.org Subject: [Tutor] file read - rewind?

I want to read in a file, act on each line of the file, and then start at the beginning again. I don't see a rewind function in the fileinput module, yet it still does not work by simply executing the for line in inputfile again. What am I missing? The while loop should repeat until STOP_READ is set to TRUE.

--Vicki

    STOP_READ = wx.FALSE
    first_iteration = wx.TRUE
    #While not STOP_READ, iterate through lines in file
    while STOP_READ == wx.FALSE or first_iteration == wx.TRUE:
        print "Got into while loop"
        for line in input.readlines():
            if len(line)>1:
                first_iteration == wx.FALSE
                tokens=line.split("|")

                self.command = tokens[0][0]+tokens[0][1]
                self.arguments =

tokens[0].lstrip(tokens[0][0]+tokens[0][1]+" ") print self.command print self.arguments self.ProcessCommand(self.command, self.arguments) wx.GetApp().Yield()

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