python爬虫 基于requests模块的get请求实现详解

            
import requests
# 1.指定url
url = 'https://www.sogou.com/'
# 2.发起get请求:get方法会返回请求成功的响应对象
response = requests.get(url=url)
# 3.获取响应中的数据：text属性作用是可以获取响应对象中字符串形式的页面数据
page_data = response.text
# 4.持久化数据
with open("sougou.html","w",encoding="utf-8") as f:
  f.write(page_data)
  f.close()
print("ok")
          

            
def get(url, params=None, **kwargs):
  r"""Sends a GET request.
  :param url: URL for the new :class:`Request` object.
  :param params: (optional) Dictionary, list of tuples or bytes to send
    in the body of the :class:`Request`.
  :param \*\*kwargs: Optional arguments that ``request`` takes.
  :return: :class:`Response 
            
              ` object
  :rtype: requests.Response
            
          

            
import requests
# 指定url
url = 'https://www.sogou.com/web'
# 封装get请求参数
prams = {
  'query':'周杰伦',
  'ie':'utf-8'
}
response = requests.get(url=url,params=prams)
page_text = response.text
with open("周杰伦.html","w",encoding="utf-8") as f:
  f.write(page_text)
  f.close()
print("ok")
          

            
import requests
# 指定url
url = 'https://www.sogou.com/web'
# 封装get请求参数
prams = {
  'query':'周杰伦',
  'ie':'utf-8'
}
# 自定义请求头信息
headers={
  'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36',
  }
response = requests.get(url=url,params=prams,headers=headers)
page_text = response.text
with open("周杰伦.html","w",encoding="utf-8") as f:
  f.write(page_text)
  f.close()
print("ok")