On 23 Aug 2006 05:48:37 -0700, peter <[EMAIL PROTECTED]> wrote: > Hello all, > > I'm looking for an advice. > > Example (one block in ascii file): > $------------------------ > NAME='ALFA' > CODE='x' > $------------------------ > > There are many similar blocks in the file with different NAMEs and > different CODEs. What I'm looking for is a script that searchs through > whole file and finds all strings with name ALFA and based on what CODE > is after each ALFA (can be x, y or z) the ALFA name is replaced by > BETAx,BETAy or BETAz and so changed file saves. > > What I did is that I can find all strings which I need, next I change > these strings based on CODE, but what I can't is to replace old string > with new one, on the same position in the file. It always writes new > string at the end of the file. Here is my code....
A simpler way can be: 1. Read a 'block' from the input file, ( you can simply read a line starting with 'NAME' and keep on reading till you find a line with starting 'CODE') 2. Once you have read a 'block', make whatever you want changes to the NAME and then write the 'block' to a temperory file. If you want the output to be written to same file just 'move' this temperory file to the input file once you are done. Note: if there is other stuff in the input file, apart from such 'blocks' that you want to preserve, a small modification in step 1 would take care of it. hth, amit. -- ---- Amit Khemka -- onyomo.com Home Page: www.cse.iitd.ernet.in/~csd00377 Endless the world's turn, endless the sun's Spinning, Endless the quest; I turn again, back to my own beginning, And here, find rest. -- http://mail.python.org/mailman/listinfo/python-list
