requests中文手册

requests是一个Python库，用于发送HTTP请求。它是用Python语言编写的，简单易用，功能强大。以下是requests库的中文手册。

安装requests库：

pip install requests

发送HTTP GET请求：

import requests

response = requests.get('http://httpbin.org/get')
print(response.text)

发送HTTP POST请求：

import requests

data = {'key1': 'value1', 'key2': 'value2'}
response = requests.post('http://httpbin.org/post', data=data)
print(response.text)

发送HTTP PUT请求：

import requests

data = {'key1': 'value1', 'key2': 'value2'}
response = requests.put('http://httpbin.org/put', data=data)
print(response.text)

发送HTTP DELETE请求：

import requests

response = requests.delete('http://httpbin.org/delete')
print(response.text)

设置请求头：

import requests

headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'}
response = requests.get('http://httpbin.org/get', headers=headers)
print(response.text)

设置请求超时时间：

import requests

response = requests.get('http://httpbin.org/get', timeout=5)
print(response.text)

设置代理：

import requests

proxies = {'http': 'http://10.10.1.10:3128', 'https': 'http://10.10.1.10:1080'}
response = requests.get('http://httpbin.org/get', proxies=proxies)
print(response.text)

设置认证：

import requests

from requests.auth import HTTPBasicAuth

auth = HTTPBasicAuth('username', 'password')
response = requests.get('http://httpbin.org/get', auth=auth)
print(response.text)

发送JSON数据：

import requests
import json

data = {'key1': 'value1', 'key2': 'value2'}
headers = {'Content-Type': 'application/json'}
response = requests.post('http://httpbin.org/post', data=json.dumps(data), headers=headers)
print(response.text)

上传文件：

import requests

files = {'file': open('example.txt', 'rb')}
response = requests.post('http://httpbin.org/post', files=files)
print(response.text)

设置cookies：

import requests

cookies = {'key1': 'value1', 'key2': 'value2'}
response = requests.get('http://httpbin.org/get', cookies=cookies)
print(response.text)

处理异常：

import requests

try:
    response = requests.get('http://httpbin.org/get', timeout=0.1)
except requests.exceptions.Timeout as e:
    print('Timeout error:', e)
except requests.exceptions.HTTPError as e:
    print('HTTP error:', e)
except requests.exceptions.RequestException as e:
    print('Other error:', e)
else:
    print(response.text)

以上就是requests库的中文手册。更多详细的API文档可以参考官方文档：https://requests.readthedocs.io/en/latest/