How to Fix \'403 Forbidden\' Errors in Python Requests?-Python Tutorial-php.cn

How to Fix \'403 Forbidden\' Errors in Python Requests?

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Release： 2024-11-01 17:04:03

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How to Fix

Resolving "403 Forbidden" Errors in API Calls Using Python Requests

When attempting to parse a website using Python's requests library, you may encounter a "403 Forbidden" error. This error typically indicates that the server has rejected your request due to lack of proper authorization or permission.

Error Example

Consider the following code:

<code class="python">url = 'http://worldagnetwork.com/'
result = requests.get(url)
print(result.content.decode())</code>

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This code attempts to retrieve and decode the content of the specified URL. However, it produces the following output:

<code class="html"><html>
<head><title>403 Forbidden</title></head>
<body bgcolor="white">
<center><h1>403 Forbidden</h1></center>
<hr><center>nginx</center>
</body>
</html></code>

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Root Cause

In this specific case, the problem arises because the server is rejecting GET requests without a User-Agent header. A User-Agent header identifies the browser or application sending the request, which helps the server determine how to handle the request.

Solution

To resolve this issue, explicitly specify a User-Agent header in your requests request. Here's an example:

<code class="python">import requests

url = 'http://worldagnetwork.com/'
headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'}
result = requests.get(url, headers=headers)
print(result.content.decode())</code>

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By setting the User-Agent header to an appropriate value, you can effectively mimic a browser and successfully retrieve the website's content, as demonstrated by the following output:

<code class="html"><!doctype html>
<!--[...]-->
<!--[...]--></code>

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