在python中使用torpy调用get函数时遇到错误

Question

以下代码完美运行，感谢@AKX

from pprint import pprint

sess = requests.Session()

# Do initial GET request, grab CSRF token
resp = sess.get("https://chartink.com/")
resp.raise_for_status()
csrf_token_m = re.search(r'<meta name="csrf-token" content="(.+?)" />', resp.text)

csrf_token = csrf_token_m.group(1)

# Do data query
resp = sess.post("https://chartink.com/screener/process",
                 data={"scan_clause":"( {cash} ( latest count( 90, 1 where latest ha-low > latest ichimoku cloud top( 9 , 26 , 52 ) ) = 90 ) )"},
                 headers={"Referer": "https://chartink.com/","x-csrf-token": csrf_token,"x-requested-with": "XMLHttpRequest"})
resp.raise_for_status()
data = resp.json()
pprint(data)

但是当我尝试使用 torpy 实现相同的功能时，我收到一条错误消息：“AttributeError: '_GeneratorContextManager' object has no attribute 'get'”，在此语句 resp = sess.get("https://chartink.com/")

req = TorRequests()
sess = req.get_session()

# Do initial GET request, grab CSRF token
resp = sess.get("https://chartink.com/")
resp.raise_for_status()

csrf_token_m = re.search(r'<meta name="csrf-token" content="(.+?)" />', resp.text)
csrf_token = csrf_token_m.group(1)

# Do data query
resp = sess.post("https://chartink.com/screener/process", data={"scan_clause": "( {cash} ( latest count( 90, 1 where latest ha-low > latest ichimoku cloud top( 9 , 26 , 52 ) ) = 90 ) )"},
                                    headers={"Referer": "https://chartink.com/", "x-csrf-token": csrf_token,
                                             "x-requested-with": "XMLHttpRequest"})
resp.raise_for_status()
pprint(resp.json())

有什么想法吗？谢谢

@AKX 根据您的建议，我更改了代码并使用了 with 语句，它起作用了。但是我无法理解它是如何与“with”一起工作的，并且可以在没有“with”语句的情况下编写代码吗？

这里是修改后的代码：

with TorRequests() as req:
    with req.get_session() as sess:
        # Do initial GET request, grab CSRF token

        resp = sess.get("https://chartink.com/")
        resp.raise_for_status()

        csrf_token_m = re.search(r'<meta name="csrf-token" content="(.+?)" />', resp.text)
        csrf_token = csrf_token_m.group(1)

        # Do data query
        resp = sess.post("https://chartink.com/screener/process", data={"scan_clause": "( {cash} ( latest count( 90, 1 where latest ha-low > latest ichimoku cloud top( 9 , 26 , 52 ) ) = 90 ) )"},
                                            headers={"Referer": "https://chartink.com/", "x-csrf-token": csrf_token,
                                                     "x-requested-with": "XMLHttpRequest"})
        resp.raise_for_status()
        pprint(resp.json())

Answer 1

您需要将with ... 与torpy's TorRequests 一起使用，因为the __enter__() function (which is what with uses) is used to open the Tor connection for the session。

该库确实提供了功能等效的帮助程序上下文管理器tor_requests_session()，所以不是

with TorRequests() as req:
    with req.get_session() as sess:

你可以的

from torpy.requests import tor_requests_session

with tor_requests_session() as sess:

您可以在不使用with 块的情况下编写代码（关于上面链接之一的提示），但您确实不应该这样做。此外，没有充分的理由 - 只是制定你的程序来使用函数 á la

def get_chartink_data(sess):
    # ...

def main():
    with tor_requests_session() as sess:
        data = get_chartink_data(sess)
    # ...

而且你真的不需要关心with。