List transpose method

Gerhard Häring gh_pythonlist at gmx.de
Thu Nov 1 22:12:16 CET 2001


On Fri, Nov 02, 2001 at 08:42:23AM +1100, Tom Harris wrote:
> Hi,
> 
> 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.

I guess any single-liner will be obfuscated Python and not necessarily
any more efficient.

If you need such things often, I'd suggest you take a look at Numeric
Python. It contains many functions for matrices.

Interesting problem nevertheless ...

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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