import random
symbs = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '0', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n', 'm', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', 'Z', 'X', 'C', 'V', 'B', 'N', 'M']
t = 80000
tt = 0
while (t != tt):
x_ = 8
cc = 0
s = 8
r = ""
x = ""
res = ""
while (cc != s):
res = ""
x = str(symbs[random.randint(0,61)])
r = r + x
cc += 1
t += 1
print(r)
>>> import itertools
>>> values = list(range(1, 4))
>>> values
[1, 2, 3]
>>> list(itertools.permutations(values, 3))
[(1, 2, 3), (1, 3, 2), (2, 1, 3), (2, 3, 1), (3, 1, 2), (3, 2, 1)]