email validator

#!/usr/bin/python

def valid():
    a = raw_input("What is Your mail : ")
    if '@' in a[-10:-8]:
        if len(a[0:3]) > 3:
            print "benar"
        else:
            print "mail salah"
    else:
        print "data tidak valid silahkan ulangi"
if __name__ == "__main__":
    valid()