About python while statement and pop()
Mark H Harris
harrismh777 at gmail.com
Thu Jun 12 12:41:24 EDT 2014
On 6/11/14 10:12 PM, hito koto wrote:
> i want to change this is code:
>
> def foo(x):
> y = []
> while x !=[]:
> y.append(x.pop())
> return y
>
Consider this generator (all kinds of permutations on the idea):
>>> L1
[1, 2, 3, 4, 5, 6, 7]
>>> def poplist(L):
while True:
yield L[::-1][:1:]
L = L[::-1][1::][::-1]
>>> pop = poplist(L1)
>>> next(pop)
[7]
>>> next(pop)
[6]
>>> next(pop)
[5]
>>> next(pop)
[4]
>>> next(pop)
[3]
>>> next(pop)
[2]
>>> next(pop)
[1]
>>> next(pop)
[]
>>> next(pop)
[]
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