Are there any existing full permutation functions in the library function of Python?

Source: Internet
Author: User

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That's it.
>>> for I in Itertools.permutations (' ABCD ', 4):
print '. Join (i) itertools ... The whole arrangement depends on the permutation, the parameter is an iterative amount, and the return value is an iterator.

Of course there are some permutations, combinations, and some combinations.
print list(itertools.combinations(['a','b','c'],2))[('a', 'b'), ('a', 'c'), ('b', 'c')]
Inside the Itertools module
The product function I make a note, almost forgot again, those with the module, ah, really pattern Tucson broken
The whole arrangement can be written like that.
[[[X, Y, z] for x in [All-in-A-z] for y in [' A ', ' B ', ' C '] for z in [' O ', ' R ', ' d ']]
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