How to Send a Custom User-Agent Header with Python\'s Requests Library?

Sending "User-agent" Using Requests Library in Python

The "User-agent" is a standard HTTP header field that identifies the type of web browser (or other user agent) that is making the request. It can be useful for website owners to know what kind of devices are accessing their site.

To send a custom "User-agent" value using the Python Requests library, it is acceptable to specify it as a field in the request headers.

Method with Requests v2.13 and Newer

For Requests versions 2.13 and later, the simplest approach is to create a dictionary and directly specify the headers.

import requests

url = 'SOME URL'

headers = {
    'User-Agent': 'My User Agent 1.0',
    'From': '[email protected]'  # This is another valid field
}

response = requests.get(url, headers=headers)

Method with Requests v2.12.x and Older

For older versions of Requests (v2.12.x and earlier), it is necessary to preserve the default headers and then add the custom "User-agent" value.

import requests

url = 'SOME URL'

# Get a copy of the default headers that Requests would use.
headers = requests.utils.default_headers()

# Update the headers with your custom ones.
headers.update(
    {
        'User-Agent': 'My User Agent 1.0',
    }
)

response = requests.get(url, headers=headers)

In either case, the "User-agent" value will be included in the request headers and sent to the remote server.

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