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+--- Thread: itertools and chain (/thread-8458.html)
itertools and chain - mp3909 - Feb-21-2018
Hi,
Can someone please help me understand what is the difference between this
t = list(itertools.chain(*([1,2,3],[4,5,6]))) and y = list(itertools.chain(([1,2,3],[4,5,6]))).The first one gives this result
[1,2,3,4,5,6] whilst the second one gives a list of lists i.e. [[1,2,3],[4,5,6]]
RE: itertools and chain - Larz60+ - Feb-21-2018
That's the difference!
RE: itertools and chain - snippsat - Feb-21-2018
* take function argument and expands it into actual positional arguments in the function call.def bar(seq, a=None, b=None):
print(seq, a, b)
>>> bar([1, 2, 3])
[1, 2, 3] None None
>>> bar(*[1, 2, 3])
1 2 3