Python- How to form a random partition of 2 lists [closed]

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Closed 2 years ago.

Does anyone know how to form a random partition of 2 lists (List1 and List2) in python? The lists do not have to have the same size. For example:

S = [1,2,3,4,5,6,7]
List1=[3,6,1,2]
List2=[5,4,7]

or

List1 =[3,5]
List2=[1,2,4,7,6]

回答1:

I'm not sure what your rules are around randomness and partitioning, but this should get you started:

import random

s = [1,2,3,4,5,6,7]

random.shuffle(s)

cut = random.randint(0, len(s))
list_1 = s[:cut]
list_2 = s[cut:]

print list_1
print list_2

回答2:

I would recommend:

1. Shuffle or randomly rearrange the list
2. Then choose the random index at which to break up the list

Code:

import random

S = [1,2,3,4,5,6,7]
random.shuffle(S)
index = random.randint(0, len(S))
List1 = S[index:]
List2 = S[:index]

回答3:

Not sure what modules you have but this is a function that does what you want.

import random
def split(S): 
    x = random.randint(0,len(S))
    y = len(S)-x
    S1 = S[0:x]
    S2 = []
    for i in range(len(S)):
        if S[i] not in S1:
           S2.append(S[i])
    return S1,S2

来源：https://stackoverflow.com/questions/43196649/python-how-to-form-a-random-partition-of-2-lists