Add more python code#2

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zhanglongqi wants to merge 6 commits intoserdardalgic:masterfrom

zhanglongqi:master

Commits on May 27, 2015

2to3
zhanglongqi
committed

Commits on Nov 15, 2016

clean code, compare i value after change it
zhanglongqi
committed

Commits on Nov 23, 2016

add example of "color in terminal"
zhanglongqi
committed

Commits on Dec 22, 2016