In <[EMAIL PROTECTED]>, Josiah Manson
wrote:
> def make_polys(n):
> """Make a list of polynomial functions up to order n.
> """
> p = lambda x: 1
> polys = [p]
>
> for i in range(n):
> polys.append(lambda x: polys[i](x)*x)
The `i` is the problem. It's not evaluated when the lambda *definition*
is executed but when the lambda function is called. And then `i` is
always == `n`. You have to explicitly bind it as default value in the
lambda definition:
polys.append(lambda x, i=i: polys[i](x)*x)
Then it works.
Ciao,
Marc 'BlackJack' Rintsch
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