Eric Emsellem wrote:

Hi,

I have a script including lines such as (reading a file with "nlines" lines):

############################## for i in range(nlines) : ... ... while i < nlines : .... i += 1 if ... : break #############################

I think you need to use a 'while' loop instead of 'for'. For example: i = 0 while i < nlines: ... ... while i < nlines : .... i += 1 if ... : break i += 1 Hope this helps! -- Ed

I do this kind of thing with for loops all the time. It usually takes this form: This skips a line if if doesn't meet your processing condition: for line in file('filename): parse line here if condition: continue process line here If you need to look forward (or backward) some number of lines, use a second loop like this: for i in range(nlines) : if condition: continue ... k=1 while k<max_look_forward and i<nlines: ... k += 1 if ...: set condition variable Bill Eric Emsellem wrote:

Hi,

I have a very dum python question here, hopefully someone can answer this in no time:

I have a script including lines such as (reading a file with "nlines" lines):

############################## for i in range(nlines) : ... ... while i < nlines : .... i += 1 if ... : break #############################

But of course the "while" loop changes the increment "i", but then, when the break condition is valid, it returns to the "for" loop and starts again with the set of lines WITHOUT taking into account the fact that "i" was incremented (so that it should not read these lines AGAIN).

Hope this is clear. Let me know if you have a simple solution (my scripting habits are coming from C, hence the way I stupily wrote things here...)

Thanks in advance for any help there

Eric

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