Using input as an argument in Python

I'm trying to use an input as an argument. dsd is supposed to be the argument of permutations(e.g 2). keywords.txt is a text file with 4 words each separated by \n. But whenever i run this, there's this error:

for b in perm(k2, dsd):TypeError: Expected int as r**

from itertools import permutations
perm = permutations
k = open('keywords.txt', 'r')
k1 = k.readlines()
dsd = input("")

if dsd == 'exact':
    dsd == len(k1)
    print(len(k1))
k2 = [d.strip('\n') for d in k1]
for b in perm(k2, dsd):
    print(''.join(b))