List Comprehensions Hackerrank Solution in Python3

x=int(input())

y=int(input())

z=int(input())

n=int(input())

print("[",end="")

for a in range(0,x+1):

for b in range(0,y+1):

for c in range (0,z+1):

if a+b+c!=n:

if a==x and b==y and c==z:

print([a,b,c],end="")

else:

print([a,b,c],end=", ")

print("]")