https://blog.csdn.net/phs999/article/details/79218869

pyhton 安装pip 以及 numpy (解决python：ModuleNotFoundError:No module named "numpy" 等类似缺包问题

2018年01月31日 16:24:43 phs999 阅读数：11177 标签： python 更多

个人分类： Python

总的解决思路就是用pip命令安装缺少的包（库）。假定python中已经默认安装了pip命令，假如我缺少numpy包的话，在cmd中python3执行：

pip3 install numpy

pyhton2的话执行：

pip install numpy

如果提示不能执行pip命令或pip命令没有安装，则进行下面的pip安装操作后，再进行上面的安装包的操作。

在安装了基本python环境后，浏览器打开下列网址，右键-另存为get-pip.py。保存到python安装目录，如：“C:\Python36”

https://bootstrap.pypa.io/get-pip.py

然后双击执行本地的get-pip.py文件（或者打开cmd，执行python get-pip.py）.

安装完毕后，可使用pip命令安装相应的包。

由此解决了
python：ModuleNotFoundError:No module named “numpy”问题。
其他类似问题用pip安装相应的包即可。

1---------------------------------------

import java.awt.*;
import java.io.*;
import javax.swing.*;

public class ImageViewer
{
   public static void main(String[] args)
   {
       EventQueue.invokeLater(() ->
       {
           JFrame frame = new ImageViewerFrame();
           frame.setTitle("手写识别系统");
           frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
           frame.setVisible(true);
       });
   }
}

class ImageViewerFrame extends JFrame
{
   private JLabel label;
   private JFileChooser chooser;
   private static final int DEFAULT_WIDTH = 600;
   private static final int DEFAULT_HEIGHT = 768;

private void welcomePage()
   {
       ImageIcon icon = new ImageIcon("./welcomePage.jpg");
       icon.setImage(icon.getImage().getScaledInstance(DEFAULT_WIDTH, DEFAULT_HEIGHT, Image.SCALE_DEFAULT));
       label.setIcon(icon);
   }

private void initOptionPane()
   {
       UIManager.put("Label.font", new Font("Dialog", Font.PLAIN, 78));
   }

private String getAnswer(String path)
   {
       PyCaller.writeImagePath(path);
       PyCaller.execPy();
       return PyCaller.readAnswer();
   }

public ImageViewerFrame()
   {
       setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
       setLocationRelativeTo(null);

// use a label to display the images
label = new JLabel();
add(label);

// set up the file chooser
chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));

// set up the menu bar
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);

JMenu menu = new JMenu("File");
menuBar.add(menu);

JMenuItem openItem = new JMenuItem("Open");
menu.add(openItem);

welcomePage();

openItem.addActionListener(event -> {
// show file chooser dialog
int result = chooser.showOpenDialog(null);

// if file selected, set it as icon of the label
           if (result == JFileChooser.APPROVE_OPTION) {
               String path = chooser.getSelectedFile().getPath();
               ImageIcon icon = new ImageIcon(path);
               icon.setImage(icon.getImage().getScaledInstance(DEFAULT_WIDTH, DEFAULT_HEIGHT, Image.SCALE_DEFAULT));
               label.setIcon(icon);

// my codes
               initOptionPane();
               String answer = getAnswer(path);
               JOptionPane.showMessageDialog(null, "识别结果：" + answer + " ");
           }
       });

JMenuItem exitItem = new JMenuItem("Exit");
       menu.add(exitItem);
       exitItem.addActionListener(event -> System.exit(0));
   }
}

---------------------------------------

import java.io.*;

class PyCaller
{
private static final String DATA_SWAP = "temp.txt";
private static final String PY_URL = System.getProperty("user.dir") + "\\test.py";

public static void writeImagePath(String path)
   {
       PrintWriter pw = null;
       try
       {
           pw = new PrintWriter(new FileWriter(new File(DATA_SWAP)));
       }
       catch (IOException e)
       {
           e.printStackTrace();
       }

pw.print(path);
pw.close();
}

public static String readAnswer()
   {
       BufferedReader br;
       String answer = null;
       try
       {
           br = new BufferedReader(new FileReader(new File(DATA_SWAP)));
           answer = br.readLine();
       }
       catch (FileNotFoundException e)
       {
           e.printStackTrace();
       }
       catch (IOException e)
       {
           e.printStackTrace();
       }

return answer;
}

public static void execPy()
   {
       Process proc = null;
       try
       {
           System.out.println(System.getProperty("user.dir") + "\\test.py");
           // proc = Runtime.getRuntime().exec("ipython3 " + PY_URL);
           proc = Runtime.getRuntime().exec("python " + PY_URL);
           proc.waitFor();
       }
       catch (IOException e)
       {
           e.printStackTrace();
       }
       catch (InterruptedException e)
       {
           e.printStackTrace();
       }
   }

public static void main(String[] args) throws IOException, InterruptedException
   {
       writeImagePath("D:\\labs\\Yao\\test.jpg");
       execPy();
       System.out.println(readAnswer());
   }
}

3-----------------------------------------------

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test
{

public Test()
   {

   }

private static String filePathTxt = "C:\\workspace\\JAVAAndPython\\temp2.txt";

   public static String readAns()
   {
       String str = "";
       BufferedReader br;
       String answer = null;
       try
       {
           br = new BufferedReader(new FileReader(new File(filePathTxt)));
           answer = br.readLine();

// String regEx = "count(\\d+)(df)";
   String regEx1 = "([1-9a-zA-Z]+)\\$\\$\\$([1-9a-zA-Z]+)\\$\\$\\$([1-9a-zA-Z]+)\\$\\$\\$\\$([1-9a-zA-Z]+)\\$\\$([1-9a-zA-Z]+)\\$\\$\\$";

   // String regEx = "([1-9a-zA-Z]+)\\$\\$\\$";
   // answer = "111$$$";
   Pattern pat = Pattern.compile(regEx1);
   Matcher mat = pat.matcher(answer);
   if(mat.find())
   {
       System.out.println(mat.group(0));
       System.out.println(mat.group(1));
       System.out.println(mat.group(2));
       System.out.println(mat.group(3));
       System.out.println(mat.group(4));
   System.out.println(mat.group(5));
   }
   else
   {
       System.out.println("-----not match");
   }

       }
       catch (FileNotFoundException e)
       {
           e.printStackTrace();
       }
       catch (IOException e)
       {
           e.printStackTrace();
       }

return answer;

}
   public static void main(String[] args)
   {
       readAns();
   }

}

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pyhton 安装pip 以及 numpy (解决python：ModuleNotFoundError:No module named numpy 等类似缺包问题

https://blog.csdn.net/phs999/article/details/79218869

pyhton 安装pip 以及 numpy (解决python：ModuleNotFoundError:No module named "numpy" 等类似缺包问题

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