sys.stdin.readline()

Mike Maxwell maxwell at ldc.upenn.edu
Wed Sep 1 13:56:17 CEST 2004


Alex Martelli wrote:
> Mike Maxwell <maxwell at ldc.upenn.edu> wrote:
> No, I think you're correctly observing that Python isn't oriented to
> one-liners -- not at all.  Most interesting things in Python require
> more than one line.  

<rant>
I don't care whether it's "interesting", I just want to get some work 
done.  And since most of the text processing tools in Unixes that I 
would otherwise use (grep, sed, tr) don't support Unicode, and are 
inconsistent in their regular expression notation to boot, it would be 
nice if I could write regex operations in a single, consistent 
programming language.  Python is a single, consistent programming 
language, but as you say, it doesn't lend itself to one-liners.
</rant>

> You could write a "oneliners shell" that takes some
> defined separator and turns it into a newline, of course, e.g.:
> 
> bangoneliner.py:
>     #!/usr/bin/env python
>     import sys
>     oneliner = sys.argv.pop(1)
>     exec '\n'.join(oneliner.split('!'))
> 
> now, sometying like
> 
> bangoneliner.py 'for x in xrange(7):!  if x%2:!    print x'
> 
> should work 

Hmm, I may give that a try...thanks!

> note that inserting the spaces after the bangs to simulate
> proper indentation IS a silly fuss, but you hafta...:-).

Well, I guess I could translate some other char (one that's easier to 
count than spaces) into indents, too.

	Mike Maxwell



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