Why do I feel like the coding style in Lutz' "Programming Python" is very far from idiomatic Python? The content feels dated, and I find that most answers that I get for Python questions use a different style from the sort of code I see in this book.
Thomas On Nov 5, 7:15 am, Jorgen Grahn <[EMAIL PROTECTED]> wrote: > On Tue, 04 Nov 2008 15:36:23 -0600, Larry Bates <[EMAIL PROTECTED]> wrote: > > [EMAIL PROTECTED] wrote: > >> tmallen: > >>> I'm parsing some text files, and I want to strip blank lines in the > >>> process. Is there a simpler way to do this than what I have here? > >>> lines = filter(lambda line: len(line.strip()) > 0, lines) > > ... > > > Of if you want to filter/loop at the same time, or if you don't want all the > > lines in memory at the same time: > > Or if you want to support potentially infinite input streams, such as > a pipe or socket. There are many reasons this is my preferred way of > going through a text file. > > > fp = open(filename, 'r') > > for line in fp: > > if not line.strip(): > > continue > > > # > > # Do something with the non-blank like: > > # > > > fp.close() > > Often, you want to at least rstrip() all lines anyway, > for other reasons, and then the extra cost is even less: > > line = line.rstrip() > if not line: continue > # do something with the rstripped, nonblank lines > > /Jorgen > > -- > // Jorgen Grahn <grahn@ Ph'nglui mglw'nafh Cthulhu > \X/ snipabacken.se> R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
