[Numpy-discussion] Working with lists

[Keith Goodman]

On 8/9/07, Nils Wagner <nwagner at iam.uni-stuttgart.de> wrote:
> [(1950.0, 2100.0), (1800.0, 1850.0), (1600.0, 1630.0), (1400.0, 1420.0),
> (1200.0, 1210.0), (990, 1018.0), (10, 12), (12.0, 14.0), (14.0, 16.0),
> (16.0, 18.0), (18.0, 20)]
>
> How can I extract the first value of each pair given in parenthesis i.e.
> 1950,1800,1600,1400,... ?

Here's one way:

[z[0] for z in bounds]