Python中网络请求的12种方式

import requests; 
response = requests.get('https://api.example.com/data')

params = {'key': 'value'}; 
response = requests.get('https://example.com/search', params=params)

data = {'username': 'learner'}; 
response = requests.post('https://example.com/login', data=data)

headers = {'User-Agent': 'MyBot/0.1'}; 
response = requests.get('https://example.com', headers=headers)

response = requests.get('https://api.example.com/data'); 
print(response.json())

with open('image.jpg', 'wb') 
as f: f.write(requests.get('https://example.com/image.jpg', stream=True).content)

response = requests.get('https://slow.example.com', timeout=3)

proxies = {'http': 'http://proxy.example.com:8080', 'https': 'https://proxy.example.com:8080'}; response = requests.get('https://example.com', proxies=proxies)

response = requests.get('https://redirect-me.example.com', allow_redirects=False)

response = requests.get('https://protected.example.com', auth=('user', 'pass'))

with requests.Session() as s:
    s.get('https://login.example.com')
    response = s.get('https://profile.example.com')

try:
    response = requests.get('https://never.exists.com')
except requests.exceptions.RequestException as e:
    print(e)

from bs4 import BeautifulSoup; import requests
 
url = 'https://example-blog.com/latest'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'html.parser')
 
titles = [title.text for title in soup.find_all(class_='article-title')]
print(titles)

import aiohttp
import asyncio
 
async def fetch(session, url):
    async with session.get(url) as response:
        return await response.text()
 
async def main():
    async with aiohttp.ClientSession() as session:
        html = await fetch(session, 'https://example.com')
        print(html)
 
loop = asyncio.get_event_loop()
loop.run_until_complete(main())