如何发送post请求

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r = requests.post('http://httpbin.org/post', data = {'key':'value'})

其他的请求也类似

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>>> r = requests.put('http://httpbin.org/put', data = {'key':'value'})
>>> r = requests.delete('http://httpbin.org/delete')
>>> r = requests.head('http://httpbin.org/get')
>>> r = requests.options('http://httpbin.org/get')

GET请求如何传递URL参数

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In [12]: r = requests.get(url,params={"key1":"1", "key2":"2"})

In [13]: r.url
Out[13]: 'http://httpbin.org/get?key2=2&key1=1'

但是怎么传递数组呢?这是个问题