如何从 Jain 数据 js 脚本中的 python 访问变量？

Question

我正在尝试从我上面的 json 数据的 python 代码中访问某些变量。我对一起使用 python 和 json 很陌生，所以我不知道该怎么做。这是我的代码：

 global proxy_addressed
        ordered_proxies = []
        for numb in range(0, num_tasks):
            if numb % num_proxies == 0:
                random.shuffle(add_proxy)
            proxy_addressed = add_proxy[numb % num_proxies]

            ordered_proxies.append(proxy_addressed)

            global pvar
            for lines in ordered_proxies:
                pvar = lines.split(':')  # rotating proxy or host

            PROXY_HOST = pvar[0]
            PROXY_PORT = pvar[1]
            PROXY_USER = pvar[2]
            PROXY_PASS = pvar[3]
            print(PROXY_HOST)
            manifest_json = """
            {
                "version": "1.0.0",
                "manifest_version": 2,
                "name": "Chrome Proxy",
                "permissions": [
                    "proxy",
                    "tabs",
                    "unlimitedStorage",
                    "storage",
                    "<all_urls>",
                    "webRequest",
                    "webRequestBlocking"
                ],
                "background": {
                    "scripts": ["background.js"]
                },
                "minimum_chrome_version":"22.0.0"
            }
            """

            background_js = """
            var config = {
                    mode: "fixed_servers",
                    rules: {
                      singleProxy: {
                        scheme: "http","""
            """         host: "{}",
                        port: "{}""""".format(PROXY_HOST, PROXY_PORT)
            """
                      },
                      bypassList: ["foobar.com"]
                    }
                  };
            """

            """
            chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});

            function callbackFn(details) {
                return {
                    authCredentials: {"""
            """         username: "{}",
                        password: "{}""""".format(PROXY_USER, PROXY_PASS)
            """
                    }
                };
            }
            chrome.proxy.settings.set({value: config, scope: "regular"}, function() {});

            function callbackFn(details) {
                return {
                    authCredentials: {
                        username: PROXY_USER,
                        password: PROXY_PASS
                    }
                };
            }

            chrome.webRequest.onAuthRequired.addListener(
                        callbackFn,
                        {urls: ["<all_urls>"]},
                        ['blocking']
            );
            """

            pluginfile = 'proxy_auth_plugin.zip'

            with zipfile.ZipFile(pluginfile, 'w') as zp:
                zp.writestr("manifest.json", manifest_json)
                zp.writestr("background.js", background_js)

            co = Options()
            co.add_argument("--start-maximized")
            co.add_extension(pluginfile)
            co.add_argument(win_size)
            driver = webdriver.Chrome("chromedriver", chrome_options=co)
            driver.execute_script("window.open('{}')".format(page_address))

我正在尝试在 manifest/background_json 中使用变量 PROXY_HOST、PROXY_PORT、PROXY_USER 和 PROXY_PASS，但没有成功。如何将代码中的变量调用到 json 中？

编辑：我应该更具体一点，我需要将代码输入到我编写的 js 脚本中，然后由 json 数据使用。所以真的就像我需要能够访问 js 脚本中的 python 变量。

编辑 2：我现在在控制台中遇到以前没有遇到的错误：

[22456:27868:0111/201424.041:ERROR:ssl_client_socket_impl.cc(935)] handshake failed; returned -1, SSL error code 1, net_error -201

编辑 3：上面的错误是因为我不小心将 PROXY_PASS 而不是 PROXY_PORT 放入需要端口的函数中。

Answer 1

如果你有字符串，那么使用字符串格式

"""username: "{}",
   password: "{}" """.format(PROXY_USER, PROXY_PASS) 

或f-string

f"""username: "{PROXY_USER}",
    password: "{PROXY_PASS}" """

---

如果字符串中有其他{}，则必须使用{{ 和}}

PROXY_USER = "Hello"
PROXY_PASS = "World"

result = """{{
   username: "{}",
   password: "{}"
}}""".format(PROXY_USER, PROXY_PASS)

print(result)

或

PROXY_USER = "Hello"
PROXY_PASS = "World"

result = f"""{{
    username: "{PROXY_USER}",
    password: "{PROXY_PASS}"
}}"""

print(result)

结果

{
   username: "Hello",
   password: "World"
}