門外漢的筆記

需設定3個環境變數, 若系統沒有設定環境變數, 會造成在import model時, 無法正確找到model.

控制台>系統及安全性>系統>進階系統設定>環境變數 >[系統變數] 點選path 添加變數

(1) c# 

private void call_python()
 {
            System.Diagnostics.ProcessStartInfo py_process = new System.Diagnostics.ProcessStartInfo();
            //python interprater location
            py_process.FileName = @"C:\ProgramData\Anaconda3\python.exe";   //調用python.exe
            string pyPath = Server.MapPath("main.py");
            string parameters = " and 5 10";//以空格分隔參數
            py_process.Arguments = pyPath + parameters; //檔名後面加要計算的傳遞參數
            py_process.UseShellExecute = false;// Do not use OS shell
            py_process.CreateNoWindow = true; // We don't need new window
            py_process.RedirectStandardOutput = true;// Any output, generated by application will be redirected back
            py_process.RedirectStandardError = true; // Any error in standard output will be redirected back (for example exceptions)
            py_process.LoadUserProfile = true;

            using (System.Diagnostics.Process process = System.Diagnostics.Process.Start(py_process))
            {
                using (StreamReader reader = process.StandardOutput)
                {
                    string stderr = process.StandardError.ReadToEnd();
                    string result = reader.ReadToEnd();
                    Debug.Print(result);
                }
            }
}

(2) py

try:
  import pandas as pd
except:
  print("model import error!")
import sys
if __name__ == '__main__':
        try:
             df= pd.read_csv('d:/py/test.csv')
             print(df)
        except:
            print("function error!")

(1)C#

(2)main.py

try:
  import sys
  import multi
  from pandas import DataFrame,Series
except:
  print("model import error!")

if __name__ == '__main__':
    if sys.argv[1]=='and':
        try:
                result=multi.calculation(int(sys.argv[2]),int(sys.argv[3]))
        except:
               print("function error!")

(3)multi.py

def calculation(a,b):
    return a*b