zip
zip(*[('a', 1), ('b', 2), ('c', 3), ('d', 4)])
解释:
https://stackoverflow.com/questions/34658436/python-why-is-zip-used-instead-of-unzip
https://stackoverflow.com/questions/2921847/what-does-the-star-operator-mean
xarange
https://stackoverflow.com/questions/94935/what-is-the-difference-between-range-and-xrange-functions-in-python-2-x
Memory_profiler
通过pip install安装
在函数中加入@profile 注解
@profile
def a()
print "x"
运行脚本时需传入-m memory_profiler参数
python -m memory_profiler example.py
然后程序运行完成后就会给出监控的函数每行代码对内存的影响；