Question

我在Windows上使用subprocess.call（）在python中执行了几个命令，但是对于每一个我需要在调用正确命令之前使用environmet setup执行批处理文件，它看起来像这样

subprocess.call(precommand + command)

有没有办法在python中“创建”shell，批处理文件只执行一次，而且shell命令会多次执行？

Answer 1

将命令写入bat文件（tempfile.NamedTemporaryFile()）
运行bat文件（subprocess.check_call(bat_file.name)）

（未经测试）：

#!/usr/bin/env python
from __future__ import print_function
import os
import subprocess
import tempfile

with tempfile.NamedTemporaryFile('w', suffix='.bat', delete=False) as bat_file:
    print(precommand, file=bat_file)
    print(command, file=bat_file)
rc = subprocess.call(bat_file.name)
os.remove(bat_file.name)
if rc != 0:
    raise subprocess.CalledProcessError(rc, bat_file.name)

Answer 2

您是否需要单独从每个命令获取输出？如果不是 - 您可以使用＆amp;＆amp;，||传达这些命令或;

from django.shortcuts import render
from .forms import LotteryForm
from django.http import HttpResponseRedirect

# Create your views here.
def lottery_list(request):
    return render(request, 'lottery/lottery.html', {})

def lottery_new(request):
   if request.method == 'POST':
       form = LotteryForm(request.POST)
       if form.is_valid():
           form.save()
            return HttpResponseRedirect('lottery_submitted')
       else:
            return render(request, 'lottery/lottery.html' {'form': LotteryForm()})
   else:  
       form = LotteryForm()
       return render(request, 'lottery/lottery.html', {'form': LotteryForm()})

Python为几个进程创建shell

2 个答案: