On Thu, 11 Aug 2011 19:03:36 -0700, goldtech wrote: > Say I have a very big string with a pattern like: > > akakksssk3dhdhdhdbddb3dkdkdkddk3dmdmdmd3dkdkdkdk3asnsn..... > > I want to split the sting into separate parts on the "3" and process > each part separately. I might run into memory limitations if I use > "split" and get a big array(?) I wondered if there's a way I could > read (stream?) the string from start to finish and read what's > delimited by the "3" into a variable, process the smaller string > variable then append/build a new string with the processed data? > > Would I loop it and read it char by char till a "3"...? Or?
Use the .find() or .index() methods to find the next occurrence of a character. Building a large string by concatenation is inefficient, as each append will copy the original string. If you must have the result as a single string, using cStringIO would be preferable. But you'd be better off if you can work with a list of strings. -- http://mail.python.org/mailman/listinfo/python-list
