Recently , i am learning python in a tutorials website,and lots of people stuck by a question ,so i published my passed answer ,and people reply to me and thanks for me , that really encourages me. Of course i am afraid of making mistakes especially the answer will be seen by people all over the world ,and there are some great coder ,but making more mistakes ,group up more quickly . So i will publish my passed answer when there are a lot of people wondering .
