subprocess

问题 I am trying to execute the following line gsutil -m rsync s3://input gs://output in python. When running this line in the shell terminal it works fine. However, I am trying to run this in a python script by using the following line. subprocess.Popen(["gsutil", "-m", "rsync", "s3://input", "gs://output"]) However it just hangs forever. It outputs the following: Building synchronization state... Starting synchronization... The bash command successfully prints: Building synchronization state...

问题 I am trying to execute the following line gsutil -m rsync s3://input gs://output in python. When running this line in the shell terminal it works fine. However, I am trying to run this in a python script by using the following line. subprocess.Popen(["gsutil", "-m", "rsync", "s3://input", "gs://output"]) However it just hangs forever. It outputs the following: Building synchronization state... Starting synchronization... The bash command successfully prints: Building synchronization state...

问题 I'm trying to call an ImageMagick command from Python 2.7 using subprocess.call. My problem is that the argument parser in subprocess puts a double quotation mark around every argument, and ImageMagick seems to have a problem with quotes around non-file arguments. What I'd like is something like this "imagemagick.exe" "im1.png" "im2.png" -alpha off ( ... ) -composite "im3.png" So far I couldn't find a way to do it with subprocess, other than manually constructing the string with ugly + " " +

问题 I'm trying to call an ImageMagick command from Python 2.7 using subprocess.call. My problem is that the argument parser in subprocess puts a double quotation mark around every argument, and ImageMagick seems to have a problem with quotes around non-file arguments. What I'd like is something like this "imagemagick.exe" "im1.png" "im2.png" -alpha off ( ... ) -composite "im3.png" So far I couldn't find a way to do it with subprocess, other than manually constructing the string with ugly + " " +

问题 I have a Minecraft bedrock edition server running on our shared pc. I would like to interface with it via python. However, one problem I have is that my brothers sometimes restart our pc, or Windows updates. I need to know how to detect that shutdown event and send the shutdown command to the server before restart. I am using the subprocess library. 回答1: So, what you will need is the win32API and the function described here. You can use this function to add what's called a Control Handler

问题 I'm trying to parse in real time the output of a program block-buffered, which means that output is not available until the process ends. What I need is just to parse line by line, filter and manage data from the output, as it could run for hours. I've tried to capture the output with subprocess.Popen(), but yes, as you may guess, Popen can't manage this kind of behavior, it keeps buffering until end of process. from subprocess import Popen, PIPE p = Popen("my noisy stuff ", shell=True,

问题 import subprocess child = subprocess.Popen(['python', 'simple.py'], stdin=subprocess.PIPE) child.communicate('Alice') I know you can communicate with executed script via communicate How do you check for whether a script 'simple.py' is asking for user input? simple.py could ask for 5-10 user inputs so simply hardcoding communicate wouldnt be enough. [EDIT]: want to parse the stdout as the script is running and communicate back to the script while True: if child.get_stdout() == '?': # send user

问题 import subprocess child = subprocess.Popen(['python', 'simple.py'], stdin=subprocess.PIPE) child.communicate('Alice') I know you can communicate with executed script via communicate How do you check for whether a script 'simple.py' is asking for user input? simple.py could ask for 5-10 user inputs so simply hardcoding communicate wouldnt be enough. [EDIT]: want to parse the stdout as the script is running and communicate back to the script while True: if child.get_stdout() == '?': # send user

问题 I want to achieve something which is very similar to this. My actual goal is to run Rasa from within python. Taken from Rasa's site: Rasa is a framework for building conversational software: Messenger/Slack bots, Alexa skills, etc. We’ll abbreviate this as a bot in this documentation. It is basically a chatbot which runs in the command prompt. This is how it works on cmd : Now I want to run Rasa from python so that I can integrate it with my Django-based website. i.e. I want to keep taking

问题 In my old python script, I use the following code to show the result for Windows cmd command: print(os.popen("dir c:\\").read()) As the python 2.7 document said os.popen is obsolete and subprocess is recommended. I follow the documentation as: result = subprocess.Popen("dir c:\\").stdout And I got error message: WindowsError: [Error 2] The system cannot find the file specified Can you tell me the correct way to use the subprocess module? 回答1: You should use call subprocess.Popen with shell