Permutation

def swap(x,y):
    return y,x

def permute(a, l, r):
    if(l==r):
        print(''.join(a))
    else:
        for i in range (l,r):
            a[l], a[i] = swap(a[l], a[i])
            permute(a, l+1, r)
            a[l], a[i] = swap(a[l], a[i])
m = input("Enter a string: ")
myStr = list(m)
n = len(myStr)
permute(myStr, 0, n)