Python: Start new command prompt on Windows and wait for it finish/exit

Python: Start new command prompt on Windows and wait for it finish/exit

You can start a new command prompt (CMD) on Windows from a Python script and wait for it to finish using the subprocess module. Here's an example:

import subprocess # Command to run in the new CMD window cmd_command = "echo Hello, World!" # Start a new CMD window and wait for it to finish process = subprocess.Popen(["cmd", "/K", cmd_command], shell=True) process.wait() # Check the exit code of the CMD process exit_code = process.returncode print(f"CMD process exited with code {exit_code}")

In this example:

  1. We import the subprocess module, which allows us to run external commands.

  2. We define the cmd_command variable, which contains the command you want to execute in the new CMD window. In this case, it's a simple "echo" command.

  3. We use subprocess.Popen() to start a new CMD process. We pass a list with the command and its arguments. The /K option tells CMD to remain open after executing the command, and shell=True allows us to run the command in a shell environment.

  4. We use process.wait() to wait for the CMD process to finish before proceeding with the script.

  5. Finally, we check the exit code of the CMD process using process.returncode. A return code of 0 typically indicates success, while other codes may indicate errors.

You can replace the cmd_command with any command you want to run in the new CMD window.

Examples

  1. Python execute command prompt and wait for completion

    • Description: Users may want to run a command prompt process in Python on Windows and wait for it to finish before continuing execution.
    • Code:
      import subprocess # Execute command prompt command and wait for completion subprocess.run("cmd /c dir", shell=True)

  2. Python start new command prompt and wait for it to exit

    • Description: Users might search for a way to start a new command prompt window in Python on Windows and wait for it to exit before proceeding.
    • Code:
      import subprocess # Start a new command prompt and wait for it to exit subprocess.run("start cmd /c dir", shell=True)

  3. Python run command prompt command synchronously

    • Description: Users may be interested in executing a command prompt command synchronously in Python and waiting for its completion.
    • Code:
      import subprocess # Run command prompt command synchronously subprocess.run("cmd /c dir", shell=True)

  4. Python launch command prompt and wait for it to finish

    • Description: Users may want to launch a command prompt window in Python on Windows and wait for it to finish executing its commands.
    • Code:
      import subprocess # Launch command prompt and wait for it to finish subprocess.run("start cmd /c dir", shell=True)

  5. Python execute batch file in a new command prompt and wait

    • Description: Users might seek a way to run a batch file in a new command prompt window in Python on Windows and wait for it to complete.
    • Code:
      import subprocess # Execute batch file in a new command prompt and wait subprocess.run("start cmd /c myscript.bat", shell=True)

  6. Python run command prompt command and wait for it to exit

    • Description: Users may want to run a command prompt command in Python on Windows and wait for the command prompt window to exit.
    • Code:
      import subprocess # Run command prompt command and wait for exit subprocess.run("cmd /c dir", shell=True)

  7. Python execute command in a new command prompt and wait

    • Description: Users might search for a way to execute a command in a new command prompt window in Python on Windows and wait for it to finish.
    • Code:
      import subprocess # Execute command in a new command prompt and wait subprocess.run("start cmd /c echo Hello", shell=True)

  8. Python open command prompt and wait for it to complete

    • Description: Users may be looking for a method to open a command prompt window in Python on Windows and wait for it to complete.
    • Code:
      import subprocess # Open command prompt and wait for completion subprocess.run("start cmd", shell=True)

  9. Python start new command prompt and wait for it to finish

    • Description: Users may seek a way to start a new command prompt instance in Python on Windows and wait for it to finish its execution.
    • Code:
      import subprocess # Start new command prompt and wait for finish subprocess.run("start cmd", shell=True)

  10. Python run command prompt command and wait for it to complete

    • Description: Users might search for a solution to execute a command prompt command in Python on Windows and wait for its completion.
    • Code:
      import subprocess # Run command prompt command and wait for completion subprocess.run("cmd /c dir", shell=True)

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