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import urllib.request

# 发送一个简单的GET请求

response = urllib.request.urlopen('https://www.example.com')

print(response.read().decode('utf-8'))  # 读取并解码响应内容

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pip install requests

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import requests

# 1. 简单的GET请求（获取信息）

response = requests.get('https://api.github.com')

print(f"状态码: {response.status_code}")  # 200表示成功

print(response.text)  # 获取网页内容

# 2. 带参数的GET请求（像在搜索框里输入内容）

params = {'key1': 'value1', 'key2': 'value2'}

response = requests.get('https://httpbin.org/get', params=params)

print(response.url)  # 查看实际请求的URL

# 3. POST请求（提交信息，像填写表单）

data = {'username': 'user', 'password': 'pass'}

response = requests.post('https://httpbin.org/post', data=data)

print(response.json())  # 以JSON格式查看响应

# 4. 自定义请求头（像添加特别说明）

headers = {'User-Agent': 'My-Python-App/1.0'}

response = requests.get('https://httpbin.org/user-agent', headers=headers)

print(response.text)

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import requests

def get_weather(city):

    # 使用一个免费的天气API（实际使用需要申请API密钥）

    api_key = "你的API密钥"

    url = f"http://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}"

    try:

        response = requests.get(url, timeout=5)  # 5秒超时

        response.raise_for_status()  # 如果请求失败会抛出异常

        weather_data = response.json()

        print(f"{city}的天气: {weather_data['weather'][0]['description']}")

        print(f"温度: {weather_data['main']['temp']}K")

    except requests.exceptions.RequestException as e:

        print(f"获取天气信息失败: {e}")

# 使用函数

get_weather('Beijing')

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requests.get(url, timeout=5)

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try:

    response = requests.get(url)

    response.raise_for_status()

except requests.exceptions.RequestException as e:

    print(f"请求出错: {e}")

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data = response.json()