requests 为什么慢 urllib3 如此之多？

[annoygaga]

目前使用 requests 库去进行一些 api 的访问，惊讶的发现 requests 库速度相较于 urllib3 慢非常多

$ url = "https://httpbin.org"

$ %timeit r = requests.get(url)

119 ms ± 42.5 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)

$ %timeit r = httpx.get(url)

%117 ms ± 17.6 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)

$ http = urllib3.PoolManager()
$ %timeit response = http.request("GET", url)
The slowest run took 6.87 times longer than the fastest. This could mean that an intermediate result is being cached.
10.6 ms ± 6.91 ms per loop (mean ± std. dev. of 7 runs, 100 loops each)

其中还尝试了 session 等方法，貌似也没有变快，上面的是多次的测试，我还做了一次请求的测试，看上去也是很慢

看了看源码和原理，想象不出来这个速度差来自哪里？

需求就是请求网址需要快，但不一定需要多次请求

[annoygaga]

@mengzhuo 也是 urllib3 快，你可以试试

[annoygaga]

@linhua 我测算了单次的速度，也是 urllib3 块

[louisxxx]

本身如此啊，你得为方便牺牲性能

[bbxiong]

关注