Question

Trying to use CMD-command in python script with "subprocess.run()"
I am trying to run a program I can only access through the CMD in a python script:
command = 'C: \\ Users \\ \\ Documents \\ chatbot.Cli \\ dotnet chatbot.Cli.dll export -f PlainText -p 140 -o "C: \\ Users \\ \\ Documents \\ .txt" --after "2023-05-18 09:00"'

subprocess.run(command, shell=True)
The error I am getting is the following:
'C:\Users\\Documents\chatbot.Cli\dotnet' is not recognized as an internal or external command,
operable program or batch file.
.NET 7.0 is installed and when I run the exact same command on the CMD it works perfectly fine.
Does anyone have an idea why?
Thank you :)

Answer 1

Jawaban:

Sorry if i am wrong

The issue you're experiencing seems to be related to the way you're passing the command to subprocess.run(). In Python, backslashes (\) are used for escaping characters, so they need to be properly escaped within the command string. Additionally, the subprocess.run() function expects the command and its arguments as a list of strings, rather than a single string.

Here's an example of how you can modify your code to properly pass the command to subprocess.run():

import subprocess

command = [

   'C:\\Users\\Documents\\chatbot.Cli\\dotnet',

   'chatbot.Cli.dll',

   'export',

   '-f',

   'PlainText',

   '-p',

   '140',

   '-o',

   'C:\\Users\\Documents\\.txt',

   '--after',

   '2023-05-18 09:00'

]

subprocess.run(command, shell=True)

In the modified code, each part of the command and its arguments are separated into individual strings within the list. The backslashes are properly escaped with an additional backslash (\\), and the command is passed as a list to subprocess.run().

By making these changes, the command should be executed correctly within the subprocess, similar to running it directly in the CMD.

Penjelasan:

Answer 2

The error message you're encountering suggests that the command prompt is unable to recognize the dotnet command as an executable. This issue can occur if the directory containing the dotnet executable is not included in the system's PATH environment variable.

To resolve this issue, you can try the following steps:

1. Verify the dotnet installation: Double-check that the .NET SDK (version 7.0 in your case) is installed correctly on your system. You can verify this by running dotnet --version in the command prompt. Ensure that the command is recognized and displays the installed version.

2. Specify the full path to the dotnet executable: Instead of relying on the system's PATH variable to locate the dotnet command, you can provide the full path to the dotnet executable in your Python script. Modify your command to include the full path to the dotnet executable, like this:

command = r'C:\path\to\dotnet chatbot.Cli.dll export -f PlainText -p 140 -o "C:\Users\Documents\output.txt" --after "2023-05-18 09:00"'

• Replace C:\path\to\dotnet with the actual path to the dotnet executable on your system.

3. Use the cwd argument in subprocess.run(): If the dotnet executable is located in a specific directory, you can set the current working directory (cwd) argument in subprocess.run() to that directory. This ensures that the command is executed in the correct directory. For example:

import os

import subprocess

command = 'dotnet chatbot.Cli.dll export -f PlainText -p 140 -o "C:\Users\Documents\output.txt" --after "2023-05-18 09:00"'

working_directory = r'C:\path\to\project_directory'  # Replace with the actual project directory

subprocess.run(command, shell=True, cwd=working_directory)

• Replace C:\path\to\project_directory with the actual path to the project directory where the dotnet executable is located.

By ensuring the correct installation of .NET, providing the full path to the dotnet executable, and setting the working directory if necessary, you should be able to run the command successfully from your Python script.