lambda in list comprehension acting funny
steve+comp.lang.python at pearwood.info
Thu Jul 12 05:59:55 CEST 2012
On Wed, 11 Jul 2012 08:41:57 +0200, Daniel Fetchinson wrote:
> funcs = [ lambda x: x**i for i in range( 5 ) ]
Here's another solution:
from functools import partial
funcs = [partial(lambda i, x: x**i, i) for i in range(5)]
Notice that the arguments i and x are defined in the opposite order.
That's because partial only applies positional arguments from the left.
If there was a "right partial" that applies from the right, we could use
the built-in instead:
funcs = [rpartial(pow, i) for i in range(5)]
More information about the Python-list