List transpose method

Gerhard Häring gh_pythonlist at gmx.de
Thu Nov 1 22:59:48 CET 2001


On Thu, Nov 01, 2001 at 10:45:05PM +0100, Gerhard Häring wrote:
> On Thu, Nov 01, 2001 at 08:51:27PM -0200, Gustavo Niemeyer wrote:
> > > Suppose I have a list like ((1,2), (3,4), (5,6)). Can some functional guru
> > > tell me a one liner to transpose this to the form ((1,3,5),(2,4,6))? I can
> > > only come up with an ugly multiliner.
> > 
> > >>> zip((1,2),(3,4),(5,6))
> > [(1, 3, 5), (2, 4, 6)]
> 
> Hmm. How would I apply zip if I have a variable already, like
                   ^^^^^
With apply, stupid!

> l = ((1,2),(3,4),(5,6))

apply(zip, l)

Gerhard
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reduce(lambda x,y:x+y,map(lambda x:chr(ord(x)^42),tuple('zS^BED\nX_FOY\x0b')))




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