[Tutor] Open a text file, read and print pattern matching

[tee chwee liong]

hi, 
 
yes you are right, the output below is my desired outcome. the sampledata i have can't be added with #.
i got syntax error when running this line:
data = for line in open(filename) if not line.startswith("#")
pls advise.
 
thanks
tcl76
 
> Date: Sun, 9 Jan 2011 01:41:43 -0500
> From: kb1pkl at aim.com
> To: tutor at python.org
> Subject: Re: [Tutor] Open a text file, read and print pattern matching
> 
> On 01/09/2011 01:25 AM, tee chwee liong wrote:
> > hi,
> > 
> > i have a sampledata as below. Pls refer to output, if found -1, how to
> > list out all the Lane number? And if there is no -1, print PASS. My code
> > is as below section.
> > 
> > thanks
> > tcl76
> > 
> > ####sampledata############
> > Platform: PC
> > Tempt : 25
> > TAP0 :0
> > TAP1 :1
> > 
> > +++++++++++++++++++++++++++++++++++++++++++++
> > Port Chnl Lane EyVt
> > +++++++++++++++++++++++++++++++++++++++++++++
> > 0 1 1 75
> > 0 1 2 -1
> > 0 1 3 10
> > 0 1 4 -1
> > 0 1 5 12
> > +++++++++++++++++++++++++++++++++++++++++++++
> > Time: 20s
> > ############################
> > 
> > ####output###################
> > case1: Found -1
> > Lane 2 FAIL
> > Lane 4 FAIL
> > 
> > case2: No -1
> > All Lanes PASS
> > ##########################
> You couldn't possibly have gotten that output from the code you
> provided, so why did you list it under output?
> > 
> > ####Code####################
> > fname = "sampledata.txt"
> > pattern = "-1"
> > for search in open(fname):
> > if pattern in search:
> > print "FAIL"
> > else:
> > print "PASS"
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
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> 
> I'm not quite sure how your data file is supposed to be laid out. I
> suggest you have it setup so that every line that isn't actually data is
> commented out somehow, and you only search the actual data. So, your new
> data file could look like:
> 
> -------paste----------------------------------
> #Platform: PC
> #Tempt : 25
> #TAP0 :0
> #TAP1 :1
> 
> #+++++++++++++++++++++++++++++++++++++++++++++
> #Port Chnl Lane EyVt
> #+++++++++++++++++++++++++++++++++++++++++++++
> 0 1 1 75
> 0 1 2 -1
> 0 1 3 10
> 0 1 4 -1
> 0 1 5 12
> #+++++++++++++++++++++++++++++++++++++++++++++
> #Time: 20s
> ---------end-paste----------------------------
> 
> Your script could look something like:
> 
> data = [for line in open(filename) if not line.startswith("#")
> for line in data:
> line = line.split()
> if line[3] == pattern:
> print "Lane " + line[2] + " PASS"
> else:
> print "Lane " + line[2] + " FAIL"
> 
> ~Corey Richardson
> _______________________________________________
> Tutor maillist - Tutor at python.org
> To unsubscribe or change subscription options:
> http://mail.python.org/mailman/listinfo/tutor
 		 	   		  
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