How to write to command line using python

Question

I need to run a series of commands in command prompt and I want to automate this process. I can run a command in command prompt using Python code:

import os
os.system("start /B start cmd.exe @cmd /k {command}")

OR

import os
import subprocess
p = subprocess.Popen(["start", "cmd", "/k", "command"], shell = True)

However, after executing a command, I cannot write another command to the same command prompt. Is there a way to do this?

The thread Calling an external command in Python is similar but I don't think it explains how to write a new command to the same command prompt after the one before finishes executing

Also, as I understand running multiple bash commands with subprocess explains how to run commands in parallel not one after each other.

Possible duplicate of running multiple bash commands with subprocess — JD D
– JD D, Commented Apr 30, 2019 at 12:29
It explains how to run them in parallel not one after another @JD D — Toykan Ozdeger
– Toykan Ozdeger, Commented Apr 30, 2019 at 12:37
Why using Python, and not any kind of shell script directly? As you may end up having to launch a shell script from Python anyway!? — B. Go
– B. Go, Commented Apr 30, 2019 at 12:45
You can always run command1; command2; command3... or with & or && if you want to stop on error... depending on your command line shell — B. Go
– B. Go, Commented Apr 30, 2019 at 12:46
@ToykanOzdeger look at the answer from "admenva", it shows how to run commands one after another. The answer from "FrancisWolcott" suggests just chaining commands using && which should work for you as well. — JD D
– JD D, Commented Apr 30, 2019 at 12:51

Dr.Xp0rK · Accepted Answer · 2019-11-11 15:14:39Z

-1

you can insert the '&' symbol (or other symbols, such as '&&' for example:

p = subprocess.Popen(["start", "cmd", "/k", "cd Desktop && cd Programs"], shell = True)

answered Nov 11, 2019 at 15:14

Dr.Xp0rK

1

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2 Comments

pandy giankoulidis Over a year ago

I am wondering if there is a guarantee that each function will start after the previous one finishes, in this case.

FlyingTeller Over a year ago

&& goes one step further. The second command is run only if the first has finished succesfully, i.e. ERRORLEVEL=0, see web.archive.org/web/20060412075633/https://www.microsoft.com/…

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