笔记：udacity计算机科学导论- 课程11/19 python取幂, DRAM 存储原理、容量、速度

求a的n次幂/方，在python中，仅用2个星表达，如2**10表示2的10次方。神奇！ 如在课程中说道："In Python we can do exponentiation by using a star star. This is what we would write mathematically as to to the power 10. So 2 to the power 10 is

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