同时运行python脚本的多个实例

Question

我试图创建86个task.py实例来同时运行。

import sys 
import subprocess 

for file in range(86): 
    subprocess.call([sys.executable,'task.py',str(file)+'in.csv',str(filen)+'out.csv']) 

Answer 1

subprocess.call等待命令完成。使用subprocess.Popen代替：

import sys 
import subprocess 

procs = [] 
for i in range(86): 
    proc = subprocess.Popen([sys.executable, 'task.py', '{}in.csv'.format(i), '{}out.csv'.format(i)]) 
    procs.append(proc) 

for proc in procs: 
    proc.wait()