get all possible combinations of a list’s elements in python

April 16th, 2008 by Lawrence David

let’s say you’ve got a list of the numbers 0 through 4 and you wanted all 32 possible combinations of them. to get that list:

list_of_five = range(0,5)

swap_list_list = [[]]

for swap in list_of_five:

temp_lists = []

for list_stub in swap_list_list:

this_list = copy.copy(list_stub)

this_list.append(swap)

temp_lists.append(this_list)

temp_lists.append(list_stub)

swap_list_list = temp_lists

print swap_list_list

Posted in Python | 9 Comments »

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9 Responses to “get all possible combinations of a list’s elements in python”

on 21 Dec 2008 at 12:31 am shady

After doing “import copy” to your code, I get this output.

$ python combo.py
[[4], []]
on 29 Oct 2013 at 7:41 pm Python code to pick out all possible combinations from a list? | Ask & Answers

[…] found some code (by googling) that apparently does what I’m looking for, but I found the code fairly opaque […]
on 17 Mar 2015 at 3:00 am P.K. Subramanian

Yes. You got this wrong.

When you don’t have import copy module this is completely useless.
on 01 Dec 2015 at 10:03 am Python code to pick out all possible combinations from a list? | Questions

[…] found some code (by googling) that apparently does what I’m looking for, but I found the code fairly opaque […]
on 23 Dec 2015 at 6:30 pm Python code to pick out all possible combinations from a list? | ASK AND ANSWER

[…] found some code (by googling) that apparently does what I’m looking for, but I found the code fairly opaque […]
on 04 Oct 2017 at 10:07 am Big Man

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on 27 Oct 2017 at 3:52 pm Python代码从列表中选出所有可能的组合？ | CODE问答

[…] 我有一个包含15个数字的列表，我需要编写一些代码，产生这些数字的所有32,768个组合。我发现some code（由谷歌）显然是在做我正在寻找的，但我发现代码相当不透明，并且谨慎使用它。另外我有一种感觉，一定是一个更优雅的解决方案。唯一发生在我身上的只是循环十进制整数1-32768并将其转换为二进制，并使用二进制表示作为过滤器来选出适当的数字。有没有人知道更好的方法？使用map()，也许？ […]
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on 04 Oct 2018 at 9:48 am Как получить все возможные комбинации элементов списков? — Вопросы и ответы по программированию

[…] нашел некоторый код (по Googling), который, […]

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get all possible combinations of a list’s elements in python

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9 Responses to “get all possible combinations of a list’s elements in python”

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