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numpy数据类型dtype转换这篇文章我们玩玩numpy的数值数据类型转换导入numpy>>> import numpy as np一、随便玩玩生成一个浮点数组>>> a = np.random.random(4)看看信息>>> aarray([ 0.0945377 , 0.52199916, 0.62490646, 0.21260126])>>> a.dtypedtype('float64')&gt

pychram 安装 pycrypto遇到如下问题：pycrypto install command ‘C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\cl.exe’ failed with exit status 21、open “x86_x64 Cross-Tools Command Prompt for VS 2017...