Why is that I get answers when I run in my system but not in codechef?

Considering this example, I find no flaw here...

def sorting():
    holder=[]
    t=int(input())
    for i in range(t):
        n=int(input())
        holder.append(n)
    holder.sort()
    for i in holder:
        print i
        if __name__='__main__':
                sorting()

What's wrong with this code? I get perfect results in my system but, not here.