Python is Considered Harmful

[Alan Offer]

Isaac To <kkto at csis.hku.hk> wrote in message news:<7ioew3xjh1.fsf at enark.csis.hku.hk>...

> I believe the behaviour can be fixed rather easily by some directives, say
> making it
> 
>   map(lambda f: f(1), [lambda x: x+(*i) for i in range(3)])
> 
> where the * construct would get the reference of i at function definition
> time rather than at function invocation time (anyone can point me to an
> PEP?).

We can essentially do this by passing i to a function that then returns the
desired function.  So to make flist with the functions that mike420 wanted,
we can use:

   flist = map(lambda i: (lambda x: x+i), range(3))

Now [f(1) for f in flist] is [1, 2, 3] as he expected.