从C调用python脚本#

Question

我有一个C#代码，它首先帮助运行python环境，然后执行python进程。但问题是它需要很多时间来执行。

实际上，我只想在python脚本中传递我的值并执行单行代码。但每次都需要执行所有的python代码。有没有一种方法可以在外部运行python进程，在我需要的时候只运行一行。

我用这个附加了C代码和python进程

C#代码

public String  Insert(float[] values)

        {
            // full path of python interpreter
            string python = @"C:\ProgramData\Anaconda2\python.exe";

            // python app to call
            string myPythonApp = @"C:\classification.py";

            // dummy parameters to send Python script 
            //int x = 2;
            //int y = 5;

            // Create new process start info
            ProcessStartInfo myProcessStartInfo = new ProcessStartInfo(python);

            // make sure we can read the output from stdout
            myProcessStartInfo.UseShellExecute = false;
            myProcessStartInfo.RedirectStandardOutput = true;
            myProcessStartInfo.CreateNoWindow = true;
            myProcessStartInfo.WindowStyle = ProcessWindowStyle.Minimized;

            // start python app with 3 arguments 
            // 1st arguments is pointer to itself, 2nd and 3rd are actual arguments we want to send
            myProcessStartInfo.Arguments = myPythonApp + " " + values[0] + " " + values[1] + " " + values[2] + " " + values[3] + " " + values[4] + " " + values[5];

            Process myProcess = new Process();
            // assign start information to the process
            myProcess.StartInfo = myProcessStartInfo;


            myProcess.Start();

            // Read the standard output of the app we called. 
            // in order to avoid deadlock we will read output first and then wait for process terminate:
            StreamReader myStreamReader = myProcess.StandardOutput;
            string myString = myStreamReader.ReadLine();

            /*if you need to read multiple lines, you might use:
                string myString = myStreamReader.ReadToEnd() */

            // wait exit signal from the app we called and then close it.
            myProcess.WaitForExit();

            myProcess.Close();

            // write the output we got from python app
            Console.WriteLine("Value received from script: " + myString);
            Console.WriteLine("Value received from script: " + myString);

和python脚本

import numpy as np
import sys

val1 = float(sys.argv[1]) 
val2 = float(sys.argv[2]) 
val3 = float(sys.argv[3]) 
val4 = float(sys.argv[4]) 
val5 = float(sys.argv[5]) 
val6 = float(sys.argv[6]) 



# Load dataset
url = "F:\FINAL YEAR PROJECT\Amila\data2.csv"
names = ['JawLower', 'BrowLower', 'BrowRaiser', 'LipCornerDepressor', 'LipRaiser','LipStretcher','Emotion_Id']
dataset = pandas.read_csv(url, names=names)

# shape
# print(dataset.shape)


# class distribution
# print(dataset.groupby('Emotion_Id').size())


# Split-out validation dataset
array = dataset.values
X = array[:,0:6]
Y = array[:,6]
neigh = KNeighborsClassifier(n_neighbors=3)


neigh.fit(X, Y) 

print(neigh.predict([[val1,val2,val3,val4,val5,val6]]))

print（neigh.predict（[[val1，val2，val3，val4，val5，val6]]）这是我要分别执行的代码行。