Python中requests.exceptionsHTTPError()异常的常见错误类型

在Python的requests库中，requests.exceptions.HTTPError()异常是一个常见的错误类型，用于表示HTTP请求发生错误。该异常是requests库中requests.Response.raise_for_status()方法抛出的。

HTTPError异常常见的错误类型如下：

1. 400 - Bad Request: 请求无效，服务器无法理解。

示例代码：

import requests

try:
    response = requests.get('https://httpbin.org/status/400')
    response.raise_for_status()
except requests.exceptions.HTTPError as e:
    print(e.response.status_code)  # 输出400
    print(e.response.content)  # 输出错误消息

2. 401 - Unauthorized: 请求需要身份验证，但是没有提供有效的凭据。

示例代码：

import requests

try:
    response = requests.get('https://httpbin.org/status/401')
    response.raise_for_status()
except requests.exceptions.HTTPError as e:
    print(e.response.status_code)  # 输出401
    print(e.response.content)  # 输出错误消息

3. 403 - Forbidden: 服务器已经理解请求，但是拒绝执行。

示例代码：

import requests

try:
    response = requests.get('https://httpbin.org/status/403')
    response.raise_for_status()
except requests.exceptions.HTTPError as e:
    print(e.response.status_code)  # 输出403
    print(e.response.content)  # 输出错误消息

4. 404 - Not Found: 请求的资源不存在。

示例代码：

import requests

try:
    response = requests.get('https://httpbin.org/status/404')
    response.raise_for_status()
except requests.exceptions.HTTPError as e:
    print(e.response.status_code)  # 输出404
    print(e.response.content)  # 输出错误消息

5. 500 - Internal Server Error: 服务器内部错误。

示例代码：

import requests

try:
    response = requests.get('https://httpbin.org/status/500')
    response.raise_for_status()
except requests.exceptions.HTTPError as e:
    print(e.response.status_code)  # 输出500
    print(e.response.content)  # 输出错误消息

通过捕获HTTPError异常，我们可以根据具体的错误类型进行处理，例如打印错误消息或者进行其他逻辑操作。