Nested loops using recursion in python

##coder @ shivamzaz#demo in c++ in simple loops
'''for(i=0;i<n;i++){
    for(j=0;j<nj++){
        cout<<n<<endl;
    }
}'''
def s_s(n):
    i=0
    s_f(i,n)
def s_f(i,n):
    if(i<n):   
        j=0
        s_g(i,j,n)
        s_f(i+1,n)
def s_g(i,j,n):
    if(j<n):
        print i,j
        s_g(i,j+1,n)
s_s(4)