subprocess

问题 I am trying to run my tcl script through python subprocess as follow: import subprocess >>> subprocess.Popen(["tclsh", "tcltest.tcl"]) <subprocess.Popen object at 0x0000000001DD4DD8> >>> subprocess.Popen(["tclsh", "tcltest.tcl"], shell=True ) <subprocess.Popen object at 0x0000000002B34550> I don't know if it is working or not, since I don't see any anything from it! my tcl script also has some packages from my company that causes errors when I use Tkinter, Tk, and eval, import Tkinter import

问题 I have a piece of code that needs to run node js. In order to write to the file for node js to recieve the command, I use the following code: def execute(comm): file_number = proc.stdin.fileno() file = open(file_number, "w+") file.write(comm) file.close() execute("""console.log("hi");""") execute("""console.log("bye");""") However, when I run execute a second time, I get the following error: OSError: [WinError 6] The handle is invalid What does this error mean and how do I fix it? Here is the

问题 I have a piece of code that needs to run node js. In order to write to the file for node js to recieve the command, I use the following code: def execute(comm): file_number = proc.stdin.fileno() file = open(file_number, "w+") file.write(comm) file.close() execute("""console.log("hi");""") execute("""console.log("bye");""") However, when I run execute a second time, I get the following error: OSError: [WinError 6] The handle is invalid What does this error mean and how do I fix it? Here is the

问题 I have a piece of code that needs to run node js. In order to write to the file for node js to recieve the command, I use the following code: def execute(comm): file_number = proc.stdin.fileno() file = open(file_number, "w+") file.write(comm) file.close() execute("""console.log("hi");""") execute("""console.log("bye");""") However, when I run execute a second time, I get the following error: OSError: [WinError 6] The handle is invalid What does this error mean and how do I fix it? Here is the

问题 I am calling a Perl script from Python 3.7.3, with subprocess. The Perl script that is called is this one: https://github.com/moses-smt/mosesdecoder/blob/master/scripts/tokenizer/tokenizer.perl And the code I am using to call it is: import sys import os import subprocess import threading def copy_out(source, dest): for line in source: dest.write(line) num_threads=4 args = ["perl", "tokenizer.perl", "-l", "en", "-threads", str(num_threads) ] with open(os.devnull, "wb") as devnull: tokenizer =

问题 I have the following code in a loop: while true: # Define shell_command p1 = Popen(shell_command, shell=shell_type, stdout=PIPE, stderr=PIPE, preexec_fn=os.setsid) result = p1.stdout.read(); # Define condition if condition: break; where shell_command is something like ls (it just prints stuff). I have read in different places that I can close/terminate/exit a Popen object in a variety of ways, e.g. : p1.stdout.close() p1.stdin.close() p1.terminate p1.kill My question is: What is the proper

问题 child = subprocess.Popen(command, shell=True, env=environment, close_fds=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, bufsize=1, ) subout = "" with child.stdout: for line in iter(child.stdout.readline, b''): subout += line logging.info(subout) rc = child.wait() some times (intermittently) this hangs forever. not sure if it hangs on iter(child.stdout.readline) or child.wait() i ps -ef for the process it Popens and that process no longer exists my guess is that it has do with bufsize

问题 I am trying to wait for a song to finish to play the next song. I am running python 3.4 on windows but am trying to be able to use it on Linux ( raspberry pi ). I have used the command subprocess.call([PLAYER, SONG]) to open the mp3 file. It plays in vlc and then stops. I know that I have not incorporated anything for the program to tell python when its finished. That's where you guys come in. I want to find a command that will wait until the song has finished and when the song is finished,

问题 I am trying to wait for a song to finish to play the next song. I am running python 3.4 on windows but am trying to be able to use it on Linux ( raspberry pi ). I have used the command subprocess.call([PLAYER, SONG]) to open the mp3 file. It plays in vlc and then stops. I know that I have not incorporated anything for the program to tell python when its finished. That's where you guys come in. I want to find a command that will wait until the song has finished and when the song is finished,

问题 So I have this GUI that I made with tkinter and everything works well. What it does is connects to servers and sends commands for both Linux or Windows. I went ahead and used pyinstaller to create a windowed GUI without console and when I try to uses a specific function for sending Windows commands it will fail. If I create the GUI with a console that pops up before the GUI, it works like a charm. What I'm trying to figure out is how to get my GUI to work with the console being invisible to