microtiger

Requests模块是第三方模块,需要预先安装,requests模块在python内置模块的基础上进行了高度的封装,从而使得python进行网络请求时,变得更加简洁和人性化。

1.安装
非常简单,打开cmd,直接pip安装,或pycharm 中搜索 requests 安装即可.

pip install requests

2)发送请求的简洁

  示例代码:获取一个网页(个人github)

import requests

r = requests.get(\'https://github.com/Ranxf\')       # 最基本的不带参数的get请求
r1 = requests.get(url=\'http://dict.baidu.com/s\', params={\'wd\': \'python\'})      # 带参数的get请求

我们就可以使用该方式使用以下各种方法

1   requests.get(‘https://github.com/timeline.json’)                                # GET请求
2   requests.post(“http://httpbin.org/post”)                                        # POST请求
3   requests.put(“http://httpbin.org/put”)                                          # PUT请求
4   requests.delete(“http://httpbin.org/delete”)                                    # DELETE请求
5   requests.head(“http://httpbin.org/get”)                                         # HEAD请求
6   requests.options(“http://httpbin.org/get” )                                     # OPTIONS请求

3)为url传递参数

>>> url_params = {\'key\':\'value\'}       #    字典传递参数,如果值为None的键不会被添加到url中
>>> r = requests.get(\'your url\',params = url_params)
>>> print(r.url)
  your url?key=value

4)响应的内容

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r.encoding                       #获取当前的编码
r.encoding = \'utf-8\'             #设置编码
r.text                           #以encoding解析返回内容。字符串方式的响应体,会自动根据响应头部的字符编码进行解码。
r.content                        #以字节形式(二进制)返回。字节方式的响应体,会自动为你解码 gzip 和 deflate 压缩。

r.headers                        #以字典对象存储服务器响应头,但是这个字典比较特殊,字典键不区分大小写,若键不存在则返回None

r.status_code                     #响应状态码
r.raw                             #返回原始响应体,也就是 urllib 的 response 对象,使用 r.raw.read()   
r.ok                              # 查看r.ok的布尔值便可以知道是否登陆成功
 #*特殊方法*#
r.json()                         #Requests中内置的JSON解码器,以json形式返回,前提返回的内容确保是json格式的,不然解析出错会抛异常
r.raise_for_status()             #失败请求(非200响应)抛出异常
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post发送json请求:

1 import requests
2 import json
3  
4 r = requests.post(\'https://api.github.com/some/endpoint\', data=json.dumps({\'some\': \'data\'}))
5 print(r.json())

5)定制头和cookie信息

header = {\'user-agent\': \'my-app/0.0.1\'\'}
cookie = {\'key\':\'value\'}
 r = requests.get/post(\'your url\',headers=header,cookies=cookie) 
data = {\'some\': \'data\'}
headers = {\'content-type\': \'application/json\',
           \'User-Agent\': \'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/22.0\'}
 
r = requests.post(\'https://api.github.com/some/endpoint\', data=data, headers=headers)
print(r.text)

6)响应状态码

使用requests方法后,会返回一个response对象,其存储了服务器响应的内容,如上实例中已经提到的 r.text、r.status_code……
获取文本方式的响应体实例:当你访问 r.text 之时,会使用其响应的文本编码进行解码,并且你可以修改其编码让 r.text 使用自定义的编码进行解码。

1 r = requests.get(\'http://www.itwhy.org\')
2 print(r.text, \'\n{}\n\'.format(\'*\'*79), r.encoding)
3 r.encoding = \'GBK\'
4 print(r.text, \'\n{}\n\'.format(\'*\'*79), r.encoding)

示例代码:

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1 import requests
2 
3 r = requests.get(\'https://github.com/Ranxf\')       # 最基本的不带参数的get请求
4 print(r.status_code)                               # 获取返回状态
5 r1 = requests.get(url=\'http://dict.baidu.com/s\', params={\'wd\': \'python\'})      # 带参数的get请求
6 print(r1.url)
7 print(r1.text)        # 打印解码后的返回数据
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运行结果:

/usr/bin/python3.5 /home/rxf/python3_1000/1000/python3_server/python3_requests/demo1.py
200
http://dict.baidu.com/s?wd=python
…………

Process finished with exit code 0
 r.status_code                      #如果不是200,可以使用 r.raise_for_status() 抛出异常

7)响应

r.headers                                  #返回字典类型,头信息
r.requests.headers                         #返回发送到服务器的头信息
r.cookies                                  #返回cookie
r.history                                  #返回重定向信息,当然可以在请求是加上allow_redirects = false 阻止重定向

8)超时

 

r = requests.get(\'url\',timeout=1)           #设置秒数超时,仅对于连接有效

 

9)会话对象,能够跨请求保持某些参数

s = requests.Session()
s.auth = (\'auth\',\'passwd\')
s.headers = {\'key\':\'value\'}
r = s.get(\'url\')
r1 = s.get(\'url1\') 

10)代理

 

proxies = {\'http\':\'ip1\',\'https\':\'ip2\' }
requests.get(\'url\',proxies=proxies)

11

# HTTP请求类型
# get类型
r = requests.get(\'https://github.com/timeline.json\')
# post类型
r = requests.post("http://m.ctrip.com/post")
# put类型
r = requests.put("http://m.ctrip.com/put")
# delete类型
r = requests.delete("http://m.ctrip.com/delete")
# head类型
r = requests.head("http://m.ctrip.com/head")
# options类型
r = requests.options("http://m.ctrip.com/get")

# 获取响应内容
print(r.content) #以字节的方式去显示,中文显示为字符
print(r.text) #以文本的方式去显示

#URL传递参数
payload = {\'keyword\': \'香港\', \'salecityid\': \'2\'}
r = requests.get("http://m.ctrip.com/webapp/tourvisa/visa_list", params=payload) 
print(r.url) #示例为http://m.ctrip.com/webapp/tourvisa/visa_list?salecityid=2&keyword=香港

#获取/修改网页编码
r = requests.get(\'https://github.com/timeline.json\')
print (r.encoding)


#json处理
r = requests.get(\'https://github.com/timeline.json\')
print(r.json()) # 需要先import json    

# 定制请求头
url = \'http://m.ctrip.com\'
headers = {\'User-Agent\' : \'Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 4 Build/JOP40D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19\'}
r = requests.post(url, headers=headers)
print (r.request.headers)

#复杂post请求
url = \'http://m.ctrip.com\'
payload = {\'some\': \'data\'}
r = requests.post(url, data=json.dumps(payload)) #如果传递的payload是string而不是dict,需要先调用dumps方法格式化一下

# post多部分编码文件
url = \'http://m.ctrip.com\'
files = {\'file\': open(\'report.xls\', \'rb\')}
r = requests.post(url, files=files)

# 响应状态码
r = requests.get(\'http://m.ctrip.com\')
print(r.status_code)
    
# 响应头
r = requests.get(\'http://m.ctrip.com\')
print (r.headers)
print (r.headers[\'Content-Type\'])
print (r.headers.get(\'content-type\')) #访问响应头部分内容的两种方式
    
# Cookies
url = \'http://example.com/some/cookie/setting/url\'
r = requests.get(url)
r.cookies[\'example_cookie_name\']    #读取cookies
    
url = \'http://m.ctrip.com/cookies\'
cookies = dict(cookies_are=\'working\')
r = requests.get(url, cookies=cookies) #发送cookies

#设置超时时间
r = requests.get(\'http://m.ctrip.com\', timeout=0.001)

#设置访问代理
proxies = {
           "http": "http://10.10.1.10:3128",
           "https": "http://10.10.1.100:4444",
          }
r = requests.get(\'http://m.ctrip.com\', proxies=proxies)


#如果代理需要用户名和密码,则需要这样:
proxies = {
    "http": "http://user:pass@10.10.1.10:3128/",
}

  

3、示例代码

GET请求

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1 # 1、无参数实例
 2   
 3 import requests
 4   
 5 ret = requests.get(\'https://github.com/timeline.json\')
 6   
 7 print(ret.url)
 8 print(ret.text)
 9   
10   
11   
12 # 2、有参数实例
13   
14 import requests
15   
16 payload = {\'key1\': \'value1\', \'key2\': \'value2\'}
17 ret = requests.get("http://httpbin.org/get", params=payload)
18   
19 print(ret.url)
20 print(ret.text)
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POST请求

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# 1、基本POST实例
  
import requests
  
payload = {\'key1\': \'value1\', \'key2\': \'value2\'}
ret = requests.post("http://httpbin.org/post", data=payload)
  
print(ret.text)
  
  
# 2、发送请求头和数据实例
  
import requests
import json
  
url = \'https://api.github.com/some/endpoint\'
payload = {\'some\': \'data\'}
headers = {\'content-type\': \'application/json\'}
  
ret = requests.post(url, data=json.dumps(payload), headers=headers)
  
print(ret.text)
print(ret.cookies)
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请求参数

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def request(method, url, **kwargs):
    """Constructs and sends a :class:`Request <Request>`.

    :param method: method for the new :class:`Request` object.
    :param url: URL for the new :class:`Request` object.
    :param params: (optional) Dictionary or bytes to be sent in the query string for the :class:`Request`.
    :param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
    :param json: (optional) json data to send in the body of the :class:`Request`.
    :param headers: (optional) Dictionary of HTTP Headers to send with the :class:`Request`.
    :param cookies: (optional) Dict or CookieJar object to send with the :class:`Request`.
    :param files: (optional) Dictionary of ``\'name\': file-like-objects`` (or ``{\'name\': file-tuple}``) for multipart encoding upload.
        ``file-tuple`` can be a 2-tuple ``(\'filename\', fileobj)``, 3-tuple ``(\'filename\', fileobj, \'content_type\')``
        or a 4-tuple ``(\'filename\', fileobj, \'content_type\', custom_headers)``, where ``\'content-type\'`` is a string
        defining the content type of the given file and ``custom_headers`` a dict-like object containing additional headers
        to add for the file.
    :param auth: (optional) Auth tuple to enable Basic/Digest/Custom HTTP Auth.
    :param timeout: (optional) How long to wait for the server to send data
        before giving up, as a float, or a :ref:`(connect timeout, read
        timeout) <timeouts>` tuple.
    :type timeout: float or tuple
    :param allow_redirects: (optional) Boolean. Set to True if POST/PUT/DELETE redirect following is allowed.
    :type allow_redirects: bool
    :param proxies: (optional) Dictionary mapping protocol to the URL of the proxy.
    :param verify: (optional) whether the SSL cert will be verified. A CA_BUNDLE path can also be provided. Defaults to ``True``.
    :param stream: (optional) if ``False``, the response content will be immediately downloaded.
    :param cert: (optional) if String, path to ssl client cert file (.pem). If Tuple, (\'cert\', \'key\') pair.
    :return: :class:`Response <Response>` object
    :rtype: requests.Response

    Usage::

      >>> import requests
      >>> req = requests.request(\'GET\', \'http://httpbin.org/get\')
      <Response [200]>
    """

参数列表

请求参数
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def param_method_url():
    # requests.request(method=\'get\', url=\'http://127.0.0.1:8000/test/\')
    # requests.request(method=\'post\', url=\'http://127.0.0.1:8000/test/\')
    pass


def param_param():
    # - 可以是字典
    # - 可以是字符串
    # - 可以是字节(ascii编码以内)

    # requests.request(method=\'get\',
    # url=\'http://127.0.0.1:8000/test/\',
    # params={\'k1\': \'v1\', \'k2\': \'水电费\'})

    # requests.request(method=\'get\',
    # url=\'http://127.0.0.1:8000/test/\',
    # params="k1=v1&k2=水电费&k3=v3&k3=vv3")

    # requests.request(method=\'get\',
    # url=\'http://127.0.0.1:8000/test/\',
    # params=bytes("k1=v1&k2=k2&k3=v3&k3=vv3", encoding=\'utf8\'))

    # 错误
    # requests.request(method=\'get\',
    # url=\'http://127.0.0.1:8000/test/\',
    # params=bytes("k1=v1&k2=水电费&k3=v3&k3=vv3", encoding=\'utf8\'))
    pass


def param_data():
    # 可以是字典
    # 可以是字符串
    # 可以是字节
    # 可以是文件对象

    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # data={\'k1\': \'v1\', \'k2\': \'水电费\'})

    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # data="k1=v1; k2=v2; k3=v3; k3=v4"
    # )

    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # data="k1=v1;k2=v2;k3=v3;k3=v4",
    # headers={\'Content-Type\': \'application/x-www-form-urlencoded\'}
    # )

    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # data=open(\'data_file.py\', mode=\'r\', encoding=\'utf-8\'), # 文件内容是:k1=v1;k2=v2;k3=v3;k3=v4
    # headers={\'Content-Type\': \'application/x-www-form-urlencoded\'}
    # )
    pass


def param_json():
    # 将json中对应的数据进行序列化成一个字符串,json.dumps(...)
    # 然后发送到服务器端的body中,并且Content-Type是 {\'Content-Type\': \'application/json\'}
    requests.request(method=\'POST\',
                     url=\'http://127.0.0.1:8000/test/\',
                     json={\'k1\': \'v1\', \'k2\': \'水电费\'})


def param_headers():
    # 发送请求头到服务器端
    requests.request(method=\'POST\',
                     url=\'http://127.0.0.1:8000/test/\',
                     json={\'k1\': \'v1\', \'k2\': \'水电费\'},
                     headers={\'Content-Type\': \'application/x-www-form-urlencoded\'}
                     )


def param_cookies():
    # 发送Cookie到服务器端
    requests.request(method=\'POST\',
                     url=\'http://127.0.0.1:8000/test/\',
                     data={\'k1\': \'v1\', \'k2\': \'v2\'},
                     cookies={\'cook1\': \'value1\'},
                     )
    # 也可以使用CookieJar(字典形式就是在此基础上封装)
    from http.cookiejar import CookieJar
    from http.cookiejar import Cookie

    obj = CookieJar()
    obj.set_cookie(Cookie(version=0, name=\'c1\', value=\'v1\', port=None, domain=\'\', path=\'/\', secure=False, expires=None,
                          discard=True, comment=None, comment_url=None, rest={\'HttpOnly\': None}, rfc2109=False,
                          port_specified=False, domain_specified=False, domain_initial_dot=False, path_specified=False)
                   )
    requests.request(method=\'POST\',
                     url=\'http://127.0.0.1:8000/test/\',
                     data={\'k1\': \'v1\', \'k2\': \'v2\'},
                     cookies=obj)


def param_files():
    # 发送文件
    # file_dict = {
    # \'f1\': open(\'readme\', \'rb\')
    # }
    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # files=file_dict)

    # 发送文件,定制文件名
    # file_dict = {
    # \'f1\': (\'test.txt\', open(\'readme\', \'rb\'))
    # }
    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # files=file_dict)

    # 发送文件,定制文件名
    # file_dict = {
    # \'f1\': (\'test.txt\', "hahsfaksfa9kasdjflaksdjf")
    # }
    # requests.request(method=\'POST\',
    # url=\'http://127.0.0.1:8000/test/\',
    # files=file_dict)

    # 发送文件,定制文件名
    # file_dict = {
    #     \'f1\': (\'test.txt\', "hahsfaksfa9kasdjflaksdjf", \'application/text\', {\'k1\': \'0\'})
    # }
    # requests.request(method=\'POST\',
    #                  url=\'http://127.0.0.1:8000/test/\',
    #                  files=file_dict)

    pass


def param_auth():
    from requests.auth import HTTPBasicAuth, HTTPDigestAuth

    ret = requests.get(\'https://api.github.com/user\', auth=HTTPBasicAuth(\'wupeiqi\', \'sdfasdfasdf\'))
    print(ret.text)

    # ret = requests.get(\'http://192.168.1.1\',
    # auth=HTTPBasicAuth(\'admin\', \'admin\'))
    # ret.encoding = \'gbk\'
    # print(ret.text)

    # ret = requests.get(\'http://httpbin.org/digest-auth/auth/user/pass\', auth=HTTPDigestAuth(\'user\', \'pass\'))
    # print(ret)
    #


def param_timeout():
    # ret = requests.get(\'http://google.com/\', timeout=1)
    # print(ret)

    # ret = requests.get(\'http://google.com/\', timeout=(5, 1))
    # print(ret)
    pass


def param_allow_redirects():
    ret = requests.get(\'http://127.0.0.1:8000/test/\', allow_redirects=False)
    print(ret.text)


def param_proxies():
    # proxies = {
    # "http": "61.172.249.96:80",
    # "https": "http://61.185.219.126:3128",
    # }

    # proxies = {\'http://10.20.1.128\': \'http://10.10.1.10:5323\'}

    # ret = requests.get("http://www.proxy360.cn/Proxy", proxies=proxies)
    # print(ret.headers)


    # from requests.auth import HTTPProxyAuth
    #
    # proxyDict = {
    # \'http\': \'77.75.105.165\',
    # \'https\': \'77.75.105.165\'
    # }
    # auth = HTTPProxyAuth(\'username\', \'mypassword\')
    #
    # r = requests.get("http://www.google.com", proxies=proxyDict, auth=auth)
    # print(r.text)

    pass


def param_stream():
    ret = requests.get(\'http://127.0.0.1:8000/test/\', stream=True)
    print(ret.content)
    ret.close()

    # from contextlib import closing
    # with closing(requests.get(\'http://httpbin.org/get\', stream=True)) as r:
    # # 在此处理响应。
    # for i in r.iter_content():
    # print(i)


def requests_session():
    import requests

    session = requests.Session()

    ### 1、首先登陆任何页面,获取cookie

    i1 = session.get(url="http://dig.chouti.com/help/service")

    ### 2、用户登陆,携带上一次的cookie,后台对cookie中的 gpsd 进行授权
    i2 = session.post(
        url="http://dig.chouti.com/login",
        data={
            \'phone\': "8615131255089",
            \'password\': "xxxxxx",
            \'oneMonth\': ""
        }
    )

    i3 = session.post(
        url="http://dig.chouti.com/link/vote?linksId=8589623",
    )
    print(i3.text)
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json请求:

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#! /usr/bin/python3
import requests
import json


class url_request():
    def __init__(self):
        \'\'\' init \'\'\'

if __name__ == \'__main__\':
    heard = {\'Content-Type\': \'application/json\'}
    payload = {\'CountryName\': \'中国\',
               \'ProvinceName\': \'四川省\',
               \'L1CityName\': \'chengdu\',
               \'L2CityName\': \'yibing\',
               \'TownName\': \'\',
               \'Longitude\': \'107.33393\',
               \'Latitude\': \'33.157131\',
               \'Language\': \'CN\'}
    r = requests.post("http://www.xxxxxx.com/CityLocation/json/LBSLocateCity", heards=heard, data=payload)
    data = r.json()
    if r.status_code!=200:
        print(\'LBSLocateCity API Error\' + str(r.status_code))
    print(data[\'CityEntities\'][0][\'CityID\'])  # 打印返回json中的某个key的value
    print(data[\'ResponseStatus\'][\'Ack\'])
    print(json.dump(data, indent=4, sort_keys=True, ensure_ascii=False))  # 树形打印json,ensure_ascii必须设为False否则中文会显示为unicode
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Xml请求:

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#! /usr/bin/python3
import requests

class url_request():
    def __init__(self):
        """init"""

if __name__ == \'__main__\':
    heards = {\'Content-type\': \'text/xml\'}
    XML = \'<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><Request xmlns="http://tempuri.org/"><jme><JobClassFullName>WeChatJSTicket.JobWS.Job.JobRefreshTicket,WeChatJSTicket.JobWS</JobClassFullName><Action>RUN</Action><Param>1</Param><HostIP>127.0.0.1</HostIP><JobInfo>1</JobInfo><NeedParallel>false</NeedParallel></jme></Request></soap:Body></soap:Envelope>\'
    url = \'http://jobws.push.mobile.xxxxxxxx.com/RefreshWeiXInTokenJob/RefreshService.asmx\'
    r = requests.post(url=url, heards=heards, data=XML)
    data = r.text
    print(data)
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状态异常处理

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import requests

URL = \'http://ip.taobao.com/service/getIpInfo.php\'  # 淘宝IP地址库API
try:
    r = requests.get(URL, params={\'ip\': \'8.8.8.8\'}, timeout=1)
    r.raise_for_status()  # 如果响应状态码不是 200,就主动抛出异常
except requests.RequestException as e:
    print(e)
else:
    result = r.json()
    print(type(result), result, sep=\'\n\')
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上传文件

使用request模块,也可以上传文件,文件的类型会自动进行处理:

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import requests
 
url = \'http://127.0.0.1:8080/upload\'
files = {\'file\': open(\'/home/rxf/test.jpg\', \'rb\')}
#files = {\'file\': (\'report.jpg\', open(\'/home/lyb/sjzl.mpg\', \'rb\'))}     #显式的设置文件名
 
r = requests.post(url, files=files)
print(r.text)
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request更加方便的是,可以把字符串当作文件进行上传:

复制代码
import requests
 
url = \'http://127.0.0.1:8080/upload\'
files = {\'file\': (\'test.txt\', b\'Hello Requests.\')}     #必需显式的设置文件名
 
r = requests.post(url, files=files)
print(r.text)
复制代码

6) 身份验证

基本身份认证(HTTP Basic Auth)

import requests
from requests.auth import HTTPBasicAuth
 
r = requests.get(\'https://httpbin.org/hidden-basic-auth/user/passwd\', auth=HTTPBasicAuth(\'user\', \'passwd\'))
# r = requests.get(\'https://httpbin.org/hidden-basic-auth/user/passwd\', auth=(\'user\', \'passwd\'))    # 简写
print(r.json())

另一种非常流行的HTTP身份认证形式是摘要式身份认证,Requests对它的支持也是开箱即可用的:

requests.get(URL, auth=HTTPDigestAuth(\'user\', \'pass\')

Cookies与会话对象

如果某个响应中包含一些Cookie,你可以快速访问它们:

import requests
 
r = requests.get(\'http://www.google.com.hk/\')
print(r.cookies[\'NID\'])
print(tuple(r.cookies))

要想发送你的cookies到服务器,可以使用 cookies 参数:

复制代码
import requests
 
url = \'http://httpbin.org/cookies\'
cookies = {\'testCookies_1\': \'Hello_Python3\', \'testCookies_2\': \'Hello_Requests\'}
# 在Cookie Version 0中规定空格、方括号、圆括号、等于号、逗号、双引号、斜杠、问号、@,冒号,分号等特殊符号都不能作为Cookie的内容。
r = requests.get(url, cookies=cookies)
print(r.json())
复制代码

会话对象让你能够跨请求保持某些参数,最方便的是在同一个Session实例发出的所有请求之间保持cookies,且这些都是自动处理的,甚是方便。
下面就来一个真正的实例,如下是快盘签到脚本:

复制代码
import requests
 
headers = {\'Accept\': \'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\',
           \'Accept-Encoding\': \'gzip, deflate, compress\',
           \'Accept-Language\': \'en-us;q=0.5,en;q=0.3\',
           \'Cache-Control\': \'max-age=0\',
           \'Connection\': \'keep-alive\',
           \'User-Agent\': \'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/22.0\'}
 
s = requests.Session()
s.headers.update(headers)
# s.auth = (\'superuser\', \'123\')
s.get(\'https://www.kuaipan.cn/account_login.htm\')
 
_URL = \'http://www.kuaipan.cn/index.php\'
s.post(_URL, params={\'ac\':\'account\', \'op\':\'login\'},
       data={\'username\':\'****@foxmail.com\', \'userpwd\':\'********\', \'isajax\':\'yes\'})
r = s.get(_URL, params={\'ac\':\'zone\', \'op\':\'taskdetail\'})
print(r.json())
s.get(_URL, params={\'ac\':\'common\', \'op\':\'usersign\'})
复制代码

requests模块抓取网页源码并保存到文件示例

这是一个基本的文件保存操作,但这里有几个值得注意的问题:

1.安装requests包,命令行输入pip install requests即可自动安装。很多人推荐使用requests,自带的urllib.request也可以抓取网页源码

2.open方法encoding参数设为utf-8,否则保存的文件会出现乱码。

3.如果直接在cmd中输出抓取的内容,会提示各种编码错误,所以保存到文件查看。

4.with open方法是更好的写法,可以自动操作完毕后释放资源

复制代码
#! /urs/bin/python3
import requests

\'\'\'requests模块抓取网页源码并保存到文件示例\'\'\'
html = requests.get("http://www.baidu.com")
with open(\'test.txt\', \'w\', encoding=\'utf-8\') as f:
    f.write(html.text)
    
\'\'\'读取一个txt文件,每次读取一行,并保存到另一个txt文件中的示例\'\'\'
ff = open(\'testt.txt\', \'w\', encoding=\'utf-8\')
with open(\'test.txt\', encoding="utf-8") as f:
    for line in f:
        ff.write(line)
        ff.close()
复制代码

因为在命令行中打印每次读取一行的数据,中文会出现编码错误,所以每次读取一行并保存到另一个文件,这样来测试读取是否正常。(注意open的时候制定encoding编码方式)

 

 

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import requests


# ############## 方式一 ##############
"""
# ## 1、首先登陆任何页面,获取cookie
i1 = requests.get(url="http://dig.chouti.com/help/service")
i1_cookies = i1.cookies.get_dict()

# ## 2、用户登陆,携带上一次的cookie,后台对cookie中的 gpsd 进行授权
i2 = requests.post(
    url="http://dig.chouti.com/login",
    data={
        \'phone\': "8615131255089",
        \'password\': "xxooxxoo",
        \'oneMonth\': ""
    },
    cookies=i1_cookies
)

# ## 3、点赞(只需要携带已经被授权的gpsd即可)
gpsd = i1_cookies[\'gpsd\']
i3 = requests.post(
    url="http://dig.chouti.com/link/vote?linksId=8589523",
    cookies={\'gpsd\': gpsd}
)

print(i3.text)
"""


# ############## 方式二 ##############
"""
import requests

session = requests.Session()
i1 = session.get(url="http://dig.chouti.com/help/service")
i2 = session.post(
    url="http://dig.chouti.com/login",
    data={
        \'phone\': "8615131255089",
        \'password\': "xxooxxoo",
        \'oneMonth\': ""
    }
)
i3 = session.post(
    url="http://dig.chouti.com/link/vote?linksId=8589523"
)
print(i3.text)

"""

抽屉新热榜

  

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import requests
from bs4 import BeautifulSoup

# ############## 方式一 ##############
#
# # 1. 访问登陆页面,获取 authenticity_token
# i1 = requests.get(\'https://github.com/login\')
# soup1 = BeautifulSoup(i1.text, features=\'lxml\')
# tag = soup1.find(name=\'input\', attrs={\'name\': \'authenticity_token\'})
# authenticity_token = tag.get(\'value\')
# c1 = i1.cookies.get_dict()
# i1.close()
#
# # 1. 携带authenticity_token和用户名密码等信息,发送用户验证
# form_data = {
# "authenticity_token": authenticity_token,
#     "utf8": "",
#     "commit": "Sign in",
#     "login": "wupeiqi@live.com",
#     \'password\': \'xxoo\'
# }
#
# i2 = requests.post(\'https://github.com/session\', data=form_data, cookies=c1)
# c2 = i2.cookies.get_dict()
# c1.update(c2)
# i3 = requests.get(\'https://github.com/settings/repositories\', cookies=c1)
#
# soup3 = BeautifulSoup(i3.text, features=\'lxml\')
# list_group = soup3.find(name=\'div\', class_=\'listgroup\')
#
# from bs4.element import Tag
#
# for child in list_group.children:
#     if isinstance(child, Tag):
#         project_tag = child.find(name=\'a\', class_=\'mr-1\')
#         size_tag = child.find(name=\'small\')
#         temp = "项目:%s(%s); 项目路径:%s" % (project_tag.get(\'href\'), size_tag.string, project_tag.string, )
#         print(temp)



# ############## 方式二 ##############
# session = requests.Session()
# # 1. 访问登陆页面,获取 authenticity_token
# i1 = session.get(\'https://github.com/login\')
# soup1 = BeautifulSoup(i1.text, features=\'lxml\')
# tag = soup1.find(name=\'input\', attrs={\'name\': \'authenticity_token\'})
# authenticity_token = tag.get(\'value\')
# c1 = i1.cookies.get_dict()
# i1.close()
#
# # 1. 携带authenticity_token和用户名密码等信息,发送用户验证
# form_data = {
#     "authenticity_token": authenticity_token,
#     "utf8": "",
#     "commit": "Sign in",
#     "login": "wupeiqi@live.com",
#     \'password\': \'xxoo\'
# }
#
# i2 = session.post(\'https://github.com/session\', data=form_data)
# c2 = i2.cookies.get_dict()
# c1.update(c2)
# i3 = session.get(\'https://github.com/settings/repositories\')
#
# soup3 = BeautifulSoup(i3.text, features=\'lxml\')
# list_group = soup3.find(name=\'div\', class_=\'listgroup\')
#
# from bs4.element import Tag
#
# for child in list_group.children:
#     if isinstance(child, Tag):
#         project_tag = child.find(name=\'a\', class_=\'mr-1\')
#         size_tag = child.find(name=\'small\')
#         temp = "项目:%s(%s); 项目路径:%s" % (project_tag.get(\'href\'), size_tag.string, project_tag.string, )
#         print(temp)

github

  

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import time

import requests
from bs4 import BeautifulSoup

session = requests.Session()

i1 = session.get(
    url=\'https://www.zhihu.com/#signin\',
    headers={
        \'User-Agent\': \'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36\',
    }
)

soup1 = BeautifulSoup(i1.text, \'lxml\')
xsrf_tag = soup1.find(name=\'input\', attrs={\'name\': \'_xsrf\'})
xsrf = xsrf_tag.get(\'value\')

current_time = time.time()
i2 = session.get(
    url=\'https://www.zhihu.com/captcha.gif\',
    params={\'r\': current_time, \'type\': \'login\'},
    headers={
        \'User-Agent\': \'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36\',
    })

with open(\'zhihu.gif\', \'wb\') as f:
    f.write(i2.content)

captcha = input(\'请打开zhihu.gif文件,查看并输入验证码:\')
form_data = {
    "_xsrf": xsrf,
    \'password\': \'xxooxxoo\',
    "captcha": \'captcha\',
    \'email\': \'424662508@qq.com\'
}
i3 = session.post(
    url=\'https://www.zhihu.com/login/email\',
    data=form_data,
    headers={
        \'User-Agent\': \'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36\',
    }
)

i4 = session.get(
    url=\'https://www.zhihu.com/settings/profile\',
    headers={
        \'User-Agent\': \'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36\',
    }
)

soup4 = BeautifulSoup(i4.text, \'lxml\')
tag = soup4.find(id=\'rename-section\')
nick_name = tag.find(\'span\',class_=\'name\').string
print(nick_name)

知乎

  

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import re
import json
import base64

import rsa
import requests


def js_encrypt(text):
    b64der = \'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCp0wHYbg/NOPO3nzMD3dndwS0MccuMeXCHgVlGOoYyFwLdS24Im2e7YyhB0wrUsyYf0/nhzCzBK8ZC9eCWqd0aHbdgOQT6CuFQBMjbyGYvlVYU2ZP7kG9Ft6YV6oc9ambuO7nPZh+bvXH0zDKfi02prknrScAKC0XhadTHT3Al0QIDAQAB\'
    der = base64.standard_b64decode(b64der)

    pk = rsa.PublicKey.load_pkcs1_openssl_der(der)
    v1 = rsa.encrypt(bytes(text, \'utf8\'), pk)
    value = base64.encodebytes(v1).replace(b\'\n\', b\'\')
    value = value.decode(\'utf8\')

    return value


session = requests.Session()

i1 = session.get(\'https://passport.cnblogs.com/user/signin\')
rep = re.compile("\'VerificationToken\': \'(.*)\'")
v = re.search(rep, i1.text)
verification_token = v.group(1)

form_data = {
    \'input1\': js_encrypt(\'wptawy\'),
    \'input2\': js_encrypt(\'asdfasdf\'),
    \'remember\': False
}

i2 = session.post(url=\'https://passport.cnblogs.com/user/signin\',
                  data=json.dumps(form_data),
                  headers={
                      \'Content-Type\': \'application/json; charset=UTF-8\',
                      \'X-Requested-With\': \'XMLHttpRequest\',
                      \'VerificationToken\': verification_token}
                  )

i3 = session.get(url=\'https://i.cnblogs.com/EditDiary.aspx\')

print(i3.text)

博客园

  

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import requests


# 第一步:访问登陆页,拿到X_Anti_Forge_Token,X_Anti_Forge_Code
# 1、请求url:https://passport.lagou.com/login/login.html
# 2、请求方法:GET
# 3、请求头:
#    User-agent
r1 = requests.get(\'https://passport.lagou.com/login/login.html\',
                 headers={
                     \'User-Agent\': \'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36\',
                 },
                 )

X_Anti_Forge_Token = re.findall("X_Anti_Forge_Token = \'(.*?)\'", r1.text, re.S)[0]
X_Anti_Forge_Code = re.findall("X_Anti_Forge_Code = \'(.*?)\'", r1.text, re.S)[0]
print(X_Anti_Forge_Token, X_Anti_Forge_Code)
# print(r1.cookies.get_dict())
# 第二步:登陆
# 1、请求url:https://passport.lagou.com/login/login.json
# 2、请求方法:POST
# 3、请求头:
#    cookie
#    User-agent
#    Referer:https://passport.lagou.com/login/login.html
#    X-Anit-Forge-Code:53165984
#    X-Anit-Forge-Token:3b6a2f62-80f0-428b-8efb-ef72fc100d78
#    X-Requested-With:XMLHttpRequest
# 4、请求体:
# isValidate:true
# username:15131252215
# password:ab18d270d7126ea65915c50288c22c0d
# request_form_verifyCode:\'\'
# submit:\'\'
r2 = requests.post(
    \'https://passport.lagou.com/login/login.json\',
    headers={
        \'User-Agent\': \'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36\',
        \'Referer\': \'https://passport.lagou.com/login/login.html\',
        \'X-Anit-Forge-Code\': X_Anti_Forge_Code,
        \'X-Anit-Forge-Token\': X_Anti_Forge_Token,
        \'X-Requested-With\': \'XMLHttpRequest\'
    },
    data={
        "isValidate": True,
        \'username\': \'15131255089\',
        \'password\': \'ab18d270d7126ea65915c50288c22c0d\',
        \'request_form_verifyCode\': \'\',
        \'submit\': \'\'
    },
    cookies=r1.cookies.get_dict()
)
print(r2.text)

拉勾网

  

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