requests库
requests库介绍:
Requests是一个优雅而简单的Python HTTP库,专为人类而构建。(来自官方的介绍)
requests 是一个很实用的Python HTTP客户端库,编写爬虫和测试服务器响应数据时经常会用到,很适合做接口测试。
request库使用
requests库安装:
requests是第三方的库,需要先安装 :pip3 install requests(python3版本)
requests源码
1 def request(method, url, **kwargs):
2 """Constructs and sends a :class:`Request <Request>`.
3
4 :param method: method for the new :class:`Request` object.
5 :param url: URL for the new :class:`Request` object.
6 :param params: (optional) Dictionary, list of tuples or bytes to send
7 in the query string for the :class:`Request`.
8 :param data: (optional) Dictionary, list of tuples, bytes, or file-like
9 object to send in the body of the :class:`Request`.
10 :param json: (optional) A JSON serializable Python object to send in the body of the :class:`Request`.
11 :param headers: (optional) Dictionary of HTTP Headers to send with the :class:`Request`.
12 :param cookies: (optional) Dict or CookieJar object to send with the :class:`Request`.
13 :param files: (optional) Dictionary of ``‘name‘: file-like-objects`` (or ``{‘name‘: file-tuple}``) for multipart encoding upload.
14 ``file-tuple`` can be a 2-tuple ``(‘filename‘, fileobj)``, 3-tuple ``(‘filename‘, fileobj, ‘content_type‘)``
15 or a 4-tuple ``(‘filename‘, fileobj, ‘content_type‘, custom_headers)``, where ``‘content-type‘`` is a string
16 defining the content type of the given file and ``custom_headers`` a dict-like object containing additional headers
17 to add for the file.
18 :param auth: (optional) Auth tuple to enable Basic/Digest/Custom HTTP Auth.
19 :param timeout: (optional) How many seconds to wait for the server to send data
20 before giving up, as a float, or a :ref:`(connect timeout, read
21 timeout) <timeouts>` tuple.
22 :type timeout: float or tuple
23 :param allow_redirects: (optional) Boolean. Enable/disable GET/OPTIONS/POST/PUT/PATCH/DELETE/HEAD redirection. Defaults to ``True``.
24 :type allow_redirects: bool
25 :param proxies: (optional) Dictionary mapping protocol to the URL of the proxy.
26 :param verify: (optional) Either a boolean, in which case it controls whether we verify
27 the server‘s TLS certificate, or a string, in which case it must be a path
28 to a CA bundle to use. Defaults to ``True``.
29 :param stream: (optional) if ``False``, the response content will be immediately downloaded.
30 :param cert: (optional) if String, path to ssl client cert file (.pem). If Tuple, (‘cert‘, ‘key‘) pair.
31 :return: :class:`Response <Response>` object
32 :rtype: requests.Response
33
34 Usage::
35
36 >>> import requests
37 >>> req = requests.request(‘GET‘, ‘https://httpbin.org/get‘)
38 <Response [200]>
39 """
40
41 # By using the ‘with‘ statement we are sure the session is closed, thus we
42 # avoid leaving sockets open which can trigger a ResourceWarning in some
43 # cases, and look like a memory leak in others.
44 with sessions.Session() as session:
45 return session.request(method=method, url=url, **kwargs)
View Code
其中,month主要是用get和post
requests模块发送请求有data、json、params三种携带参数的方法。
params在get请求中使用,data、json在post请求中使用。
‘‘‘requests--get方法r=requests.get(‘https://movie.douban测试数据/‘)print(r.status_code) #查看状态码print(r.text) #查看响应内容print(r.content.decode(‘utf-8‘)) #查看字节流(二进制)print(r.url) #查看请求地址print(r.encoding) #查看字符编码print(r.cookies) #查看cookieprint(r.headers) #查看请求头信息# 当返回的响应格式是json时,可以用r.json())# 这里有两种方式,一种是直接用请求地址,另一种是用参数的方式传递paramesurl=‘https://movie.douban测试数据/subject_search?search_text=%E5%93%AA%E5%90%92&cat=1002‘url1=‘https://movie.douban测试数据/subject_search?search_text=哪吒&cat=1002‘payload={‘search_text‘:‘哪吒‘,‘cat‘:1002}r=requests.get(url1,params=payload)‘‘‘
声明:本文来自网络,不代表【好得很程序员自学网】立场,转载请注明出处:http://haodehen.cn/did172691