Thanks a lot for your help. This was the problem. I fixed it this way :
def linear_merge(list1, list2):
if list1==[]: return list2
elif list2==[]: return list1
elif list1[-1]>list2[-1]:
a=list1.pop()
linear_merge(list1,list2).append(a)
return linear_merge(list1,list2)
else:
a=list2.pop()
linear_merge(list1,list2).append(a)
return linear_merge(list1,list2)
I use append and then return the result, as list.append is not a query.
Thank you !
On 03/01/2016 09:40 PM, Danny Yoo wrote:
Also, as a quick note: Python list append is not functional: it
mutates rather than returns a useful return value. You may need to
revisit the parts in the code where it assumes a different behavior
from functional append.
On Mar 1, 2016 12:36 PM, "Danny Yoo" <d...@hashcollision.org
<mailto:d...@hashcollision.org>> wrote:
>
> Problem is that python complains that he cannot know the type of
the result of this function (list). In C++ I would specify the
type, but from what I understood, Python should not need this.
What did I miss ?
Can you copy the exact stack trace of the error? It'll help:
you've interpreted what the error means, which is useful, but it's
also important to show the unvarnished output too. It will let us
look and make our own interpretations.
Good luck!
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