同时运行两个python文件 [英] Run two python files at the same time

问题描述

我尝试使用

#!/bin/bash
python ScriptA.py &
python ScriptB.py &

可以同时运行两个脚本，但是即使所有python文件都位于同一文件夹中，它也始终使用ScriptA返回无效语法".

同时运行两个脚本的文件:

def song():
user = input()
    if user == "Chance":
        python ScriptA.py &
        python ScriptB.py &
   else:
        print("Error")

到目前为止，我发现的解决方案(例如将该脚本放在一行中)无法正常工作，因为错误仍然显示.

-------------------------- EDIT -------------------- ------

两个脚本都可以单独正常运行，但是，您提供的所有解决方案仍按顺序运行.脚本A是通过OpenCV播放的视频，脚本B是通过playsound播放的歌曲.

ScriptA:

import cv2
import numpy as np
import os
os.environ['SDL_VIDEO_CENTERED'] = '1'
cap = cv2.VideoCapture("video.mp4")
while(cap.isOpened()):
  ret, frame = cap.read()
  if ret == True:
    cv2.imshow('Frame',frame)
    if cv2.waitKey(25) & 0xFF == ord('q'):
      break
  else:
    break
cap.release()
cv2.destroyAllWindows()

ScriptB:

from playsound import playsound
a = (r"C:\Users\A\Desktop\sound.mp3")
playsound(a)

您可能会说，我正在尝试在视频旁显示一首歌曲.我试图显示有声音的视频，但是由于某些原因，openCV无法输出声音.有什么建议?

解决方案

我认为您正在寻找多线程

您可以将两个脚本合并为另一个脚本， 然后用theads消遣他们

-编辑-

from threading import Thread

import cv2
import numpy as np
import os
from playsound import playsound

def play_sound(): 
    # import your script A
    a = (r"C:\Users\A\Desktop\sound.mp3")
    playsound(a)

def CV2_stuff():
    # import your script B
    os.environ['SDL_VIDEO_CENTERED'] = '1'
    cap = cv2.VideoCapture("video.mp4")
    ...


Thread(target = play_sound).start() 
Thread(target = CV2_stuff).start()

希望有帮助

这也可以工作

import ScriptA
import ScriptB

ScriptA.function()
ScriptB.function()

但它们不会在同一时间被灭绝

I have tried using

#!/bin/bash
python ScriptA.py &
python ScriptB.py &

to run both scripts at the same time but it always returns "Invalid Syntax" with ScriptA even though all python files are in the same folder.

File that runs both scripts:

def song():
user = input()
    if user == "Chance":
        python ScriptA.py &
        python ScriptB.py &
   else:
        print("Error")

The solutions i found so far, such as putting that script in one line, doesn't work as the error still shows.

--------------------------EDIT--------------------------

Both scripts run fine individually however, all the solutions you have provided still run sequentially. Script A is a video that plays via OpenCV and Script B is a song that plays via playsound.

ScriptA:

import cv2
import numpy as np
import os
os.environ['SDL_VIDEO_CENTERED'] = '1'
cap = cv2.VideoCapture("video.mp4")
while(cap.isOpened()):
  ret, frame = cap.read()
  if ret == True:
    cv2.imshow('Frame',frame)
    if cv2.waitKey(25) & 0xFF == ord('q'):
      break
  else:
    break
cap.release()
cv2.destroyAllWindows()

ScriptB:

from playsound import playsound
a = (r"C:\Users\A\Desktop\sound.mp3")
playsound(a)

As you may tell, i'm trying to display a song alongside a video. I tried to display a video that has sound but openCV doesn't output sound for some reason. Any suggestions?

解决方案

I think you are looking for multi-threading

you could merge your both script into another script, then lauch them using theads

--edit--

from threading import Thread

import cv2
import numpy as np
import os
from playsound import playsound

def play_sound(): 
    # import your script A
    a = (r"C:\Users\A\Desktop\sound.mp3")
    playsound(a)

def CV2_stuff():
    # import your script B
    os.environ['SDL_VIDEO_CENTERED'] = '1'
    cap = cv2.VideoCapture("video.mp4")
    ...


Thread(target = play_sound).start() 
Thread(target = CV2_stuff).start()

hope it helps

this could work too

import ScriptA
import ScriptB

ScriptA.function()
ScriptB.function()

but they wouldn't be exectuted in the same time

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