nextthen的博客

今天写的一段代码编译未报错，运行出现错误。#include<iostream>#include<math.h>using namespace std;void statistics(double a[],int n,double *max,double *min,double *avg,double *stdev);int main(){    double ...

初用Python,运行时报错如题：                  IndentationError:unindent does not match any outer indentation level 检查了好几遍没有问题，把代码贴上如下：    #Filename:Prime2.pyfrom math import sqrtflag=1for i in range(2...

代码如下：import matplotlib.pyplot as pltfrom sklearn.datasets import fetch_openmlfrom sklearn.neural_network import MLPClassifierprint(_doc_)#这里应该是双下划线，对于初学者来说容易不注意导致报错X,y=fetch_openml('mnist_784'...

今天进行scikit-learn的特征选择实验时，一段非常短的代码不知为何总是报错，代码如下：#Filename:FeatureV1.pyfrom sklearn.feature_selection import VarianceThresholdX=[[0,0,1],[0,1,0],[1,0,0],[0,1,0],[0,1,1]]sel=VarianceThreshold(thresh...