从 Django & 执行命令行脚本Python [英] Executing command line script from Django & Python

问题描述

我正在构建一个 Django 管理命令，它使用 Paul Hammond 的 webkit2png 脚本 (http://www.paulhammond.org/webkit2png/) 并将它们存储到我的数据库中.

I'm building a Django management command which is creating website screenshots using Paul Hammond's webkit2png script (http://www.paulhammond.org/webkit2png/) and stores them into my DB.

对于这个命令，我使用了来自subprocess"的call"命令.如何在特定目录(本例中为 django 项目下的 temp/)中执行此命令?我当前的代码看起来像这样，但它没有找到要执行的脚本，该脚本存储在我的 virtualenv 站点包文件夹中:

For this command I'm using the 'call' command from 'subprocess'. How do I execute this command in specific directory (temp/ under django project in this case)? My current code looks like this but it doesn't find the script to execute which is stored in my virtualenv site-packages folder:

import os

from django.core.management.base import NoArgsCommand
from django.conf import settings
from subprocess import call

# Models
from reviews.models import Shop

class Command(NoArgsCommand):
    def handle_noargs(self, **options):
        # Shops
        shops = Shop.objects.all()

        path = os.path.join(settings.SITE_ROOT, '../env/lib/python2.6/site-packages')

        for shop in shops:
            print shop
            command = "cd temp; python %s/webkit2png.py -F %s" % (path, shop.url)
            call([command])

            # Read the screenshot file and insert to model's ImageField

推荐答案

您需要使用 cwd 参数来call.此外，我建议在使用之前将路径标准化.

You need to use the cwd parameter to call. Also I'd recommend normalizing the path before using it.

path = os.path.normpath(os.path.join(settings.SITE_ROOT, 
    '../env/lib/python2.6/site-packages'))

for shop in shops:
    print shop
    call(["python", path + "/webkit2png.py", "-F", shop.url], cwd="temp")

# Read the screenshot file and insert to model's ImageField

call 采用与 打开.您可能会在那里找到更多有用的东西.此外，最好将您的命令行标记拆分为传递给 call 的列表中的单独字符串，并将 shell 参数保留为其默认的 False>.这样，您就不必担心 shell 转义、引用或任何弄乱参数的问题.

call takes the same arguments as Popen. You might find some more things there that help out as well. Also, it's best to split your command-line tokens up as separate strings in the list passed to call and leave the shell parameter at its default False. This way, you don't have to worry about shell escaping, quoting, or whatever messing up your parameters.

这篇关于从 Django & 执行命令行脚本Python的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！