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我有一个大约 300K API URL 的列表，我想调用这些 URL 并从中获取数据：

lst = ['url.com','url2.com']

如果我将我的列表细分为 5 个 urlgrequest可以完美地处理请求。但是，当我传入完整的 ~300K URL 时，出现错误：

Problem: url.Iam.passing.in: HTTPSConnectionPool(host='url', port=xxx): Max retries exceeded with url: url.Iam.passing.in (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x552b17550>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',))
Traceback (most recent call last):

到目前为止进行异步调用的代码：

class Test:
    def __init__(self):
        self.urls = lst

    def exception(self, request, exception):
        print ("Problem: {}: {}".format(request.url, exception))

    def async(self):
        return grequests.map((grequests.get(u, stream=False) for u in self.urls), exception_handler=self.exception, size=5)


    def collate_responses(self, results):
        return [x.text for x in results]
test = Test()
#here we collect the results returned by the async function
results = test.async()
response_text = test.collate_responses(results)

当我通过时，我不确定自己做错了什么stream=False。

无论如何我可以分批传递我的清单吗？

4

1 回答 1

1

尝试以下几行：

def async(x):
    #.....do something here.....#
    #return grequests.map((grequests.get(x, stream=False)), exception_handler=self.exception, size=5)

for url in url_list:
    result = async(url)
    time.sleep(5)   #This will add a 5 second delay
于 2018-08-27T13:53:24.927 回答