Shell命令无法从vb.net执行我的.py文件

Question

I wonder if anyone can point me in the right direction. I am trying to write a VB application that runs a simple python program of about 10 lines , then is supposed to return to VB and wait for the excel file that xyz.py created to read a cell from it.

Problem I cannot get the file to execute.

I have tried

 Shell("C:\Users\Clive\AppData\Local\Programs\Python\Python36\python.exe C:\Users\Clive\Documents\xyz.py") 

also:

 System.Diagnostics.Process.Start("C:\Users\Clive\Documents\xyz.py") 

none of these work. before we carry on double clicking xyz.py gives me a correct result as well as running from the command line. Am I missing a reference or something?

thanks in advance!

Clive

Answer 1

The code you are using should work fine. But this worked for me

Shell("py C:\fakepath\xyz.py")

If py is not in your PATH environment you can find it at C:\\Windows\\py.exe

Answer 2

It works for me. First a python3 script to generate a csv file:

import csv
with open('order.csv', 'w', newline='') as csvfile:
    writer = csv.writer(csvfile, delimiter=',')
    writer.writerow(['name', 'amount'])
    writer.writerow(['ham', '3'])
    writer.writerow(['egg', '2'])
exit(1)

Then a vb app to call the python script and read the generated csv file:

Imports System.IO
Module App
    Sub Main()
        Process.Start("C:\Projects\PythonVbInterop\PythonVbInterop\script.py").WaitForExit()
        For Each line In File.ReadAllLines("Order.csv")
            Console.WriteLine(line)
        Next
    End Sub
End Module