以前很多人认为：采购负责买，研发负责设计。但今天，这种分工正在被打破。为什么？因为电子行业变化太快了。采购如果不懂技术，就很难判断：这个型号是否有替代？停产风险大不大？为什么研发坚持不用更便宜的方案？交期变化会不会影响量产？

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NumPy is known for being fast, but could it go even faster? Here’s how to use Cython to accelerate array iterations in NumPy. NumPy gives Python users a wickedly fast library for working with data in ...

NumPy (Numerical Python) is an open-source library for the Python programming language. It is used for scientific computing and working with arrays. Apart from its multidimensional array object, it ...