I really need help with this one

Question

I have 4 lists like this

a=[4,9,2]
b=[7,8,10]
c=[1,3,11]
d=[0,5,6]
From these 4 lists I want to create one that has one number from a, then one number from b, then one from c, and finally one from d

firstnumber= a [random.randint(0,2)]
secondnumer= b [random.randint(0,2)]
thirdnumber=c[random.randint(0,2)]
fourthnumber=d [random.randint(0,2)]

randomlist=[firstnumber,secondnumber,thirdnumber,fourthnumber]

Now, until this point I have no problem, everytime I run the program I get one possible combination of a list that meets these requirements. But what if I wanted to get all possible combinations of randomlist? How can I code that? Ive tried with combination within the itertools module but I had no success. If anyone could help me it would be great. Thanks

Answer 1

Did you try permutations from itertools? It works better for getting all possible combinations than combinations itself. If I think that is what you meant.

I wish you success!

Answer 2

The way you're creating new list as [a,b,c,d] and by a,b,c,d, I mean one element from each at defined index, the easiest way I could think of is using nested for loops

a= [4,9,2]
b= [7,8,10]
c= [1,3,11]
d= [0,5,6]

perm =[]
for i in a:
for j in b:
for k in c:
for l in d:
perm.append([i,j,k,l])

for each in perm:
print(each)

But again, it's not feasible if lists are bigger or having more lists.