Creating sublists [duplicate]

This question already has answers here:

How do you split a list into evenly sized chunks? (60 answers)

Closed last year.

The opposite of list flattening.

Given a list and a length n return a list of sub lists of length n.

def sublist(lst, n):
    sub=[] ; result=[]
    for i in lst:
        sub+=[i]
        if len(sub)==n: result+=[sub] ; sub=[]
    if sub: result+=[sub]
    return result

An example:

If the list is:

[1,2,3,4,5,6,7,8]

And n is:

Return:

[[1, 2, 3], [4, 5, 6], [7, 8]]

Is there a more eloquent / concise way?

An aside, what is preferred when appending lists to lists (in the context above):

list1+=[list2]

Or:

list1.append(list2)

Given that (according to Summerfeild's 'Programming in Python 3') they are the same?

Thanks.

задан Michael Puckett 21 December 2010 в 16:40

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Creating sublists [duplicate]

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