python 安装httpx模块

要安装httpx模块，你可以使用pip命令。在命令行中输入以下命令即可安装httpx模块：

pip install httpx

安装完成后，你就可以在Python代码中导入httpx模块并使用它了。例如，你可以使用以下代码导入httpx模块并发送GET请求：

import httpx

url = 'https://spa16.scrape.center/'
headers = {
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36 Edg/96.0.1054.62',
    'referer': 'https://scrape.center/'
}

client = httpx.Client(http2=True)
response = client.get(url, headers=headers)

print(response.text)
print(response.http_version)

这段代码使用httpx发送了一个GET请求，并打印了响应的内容和使用的传输协议版本。\[1\]希望这可以帮助到你。
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