如何在Python中快速画图--使用Jupyter notebook的魔法函数(magic function)matplotlib inline 先展示一段相关的代码: #we test the accuracy of knn and find the k which makes the biggest accuracy k_range=list(range(1,26))#[1,25] scores=[] for k in k_range: knn=KNeighborsClassifier(n_…
<os和sys的官方解释> ➤os os: This module provides a portable way of using operating system dependent functionality. 这个模块提供了一种方便的使用操作系统函数的方法. ➤sys sys: This module provides access to some variables used or maintained by the interpreter and to functions that…