上周刚面的akuna python dev的position。 OA挺容易的 特别是编程题。比较难的就是几道选择题，可以看看地理的一些面经。我记得好像还考了几道Operating System的题，还没上过OS所以直接不会就乱猜。结果还有phone interview。
电话感觉有点难。感觉他们要的是一个python特厉害的编程员。而且面我的三哥的英语很难听得懂，挂完电话就感觉肯定会被挂了。本来就没特想去akuna， 打算用他来negotiate另一个公司，现在也没办法了。
发发面经 攒攒人品吧 希望能帮到大家。
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Encapsulation vs abstraction
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Deep copy vs shallow copy. 给几个例子。 然后问了几个比较细的问题
-A = [1,2,3]; B = copy(A); B[0] = 100; what’s A?
-A = [(1,2,3),(1,2,3)]; B = copy(A); B[0] = (20,30); what’s A?
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Explain with keyword in python. Followup:how to use with statement for a class:
-If you create a new object and you want to say
with Person() as p, what doyou have to do? => 答案就是你需要在那个class override__enter__和__exit__两个functions。答出来了但感觉他听了就没什么回应。-Do you need try and except blocks inside with statements? If you there is anerror in your with blocks, would it throw an exception if you don’t have tryexcept blocks?
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Garbage collection: How does garbagecollection work in python? When would reference counting not work? 我说 when you have cyclic references like a doubly linkedlist.
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Generator and yield. What is a generator?Followup: If you exhaust all the elements in the generator and you call .next()what would the generator do?
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If your function’s default parameter is amutable type, what can go wrong? e.g. def hello(name=[]) => 这个比较难。我也不知道。
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explain decorators. Give specificexamples.