问题 HTTP 错误 403：从 Internet 读取时被禁止 [重复]

Question

我试图从互联网上读取图像，但我不断收到 HTTP 错误 403：禁止访问。我查看了Problem HTTP Error 403 page，但此页面对我没有帮助。 这是我的代码：

import cv2
import urllib.request`
import numpy as np

req = urllib.request.urlopen('https://media.discordapp.net/attachments/862441786333200394/862449591642488882/pokemon.png?width=473&height=473')
arr = np.asarray(bytearray(req.read()), dtype=np.uint8)
img = cv2.imdecode(arr, -1) # 'Load it as it is'

cv2.imshow(img)

这是我得到的错误：

Traceback (most recent call last):
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\Auto Typer\AT TEST2.py", line 15, in <module>
    req = urllib.request.urlopen('https://media.discordapp.net/attachments/862441786333200394/862449591642488882/pokemon.png?width=473&height=473')
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 214, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 523, in open
    response = meth(req, response)
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 632, in http_response
    response = self.parent.error(
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 561, in error
    return self._call_chain(*args)
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 494, in _call_chain
    result = func(*args)
  File "C:\Users\User1\AppData\Local\Programs\Python\Python39\lib\urllib\request.py", line 641, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden

Answer 1

将User-Agent 标头添加到您的请求中：

req = urllib.request.urlopen('https://media.discordapp.net/attachments/862441786333200394/862449591642488882/pokemon.png?width=473&height=473', headers={'User-Agent': 'Mozilla/5.0'})

它大概知道你是一个机器人，所以为了安全而阻止你。