Simplifying HTTP Requests in Python: Requests vs urllib3

Feb 3, 2024 ยท 2 min read

Making HTTP requests is a common task in Python programming. The two most popular libraries for making requests are requests and urllib3. But when should you use one over the other? Here's a practical guide to help choose the right tool for the job.

Requests: The Simple, Intuitive Option

The Requests library aims to make HTTP requests simpler and more human-readable. Here is a basic GET request using Requests:

import requests

response = requests.get('')

Requests handles common tasks like:

  • Automatically encoding parameters
  • Processing response content like JSON
  • Handling authentication, cookies, and other fiddly details
  • This makes Requests ideal for basic HTTP tasks. The simple API means you can start making requests quickly without lots of boilerplate code.

    When to Use Requests

    Use Requests for:

  • Simple HTTP requests like GET, POST, PUT, etc
  • APIs that return JSON, text, images, etc
  • Quick scripts or programs that need basic HTTP functionality
  • Prototyping and testing before wiring up robust logic
  • Requests is beginner friendly and great for everyday HTTP needs.

    urllib3: Lower Level, More Control

    The urllib3 library handles the nitty-gritty details of making HTTP connections. Here is a basic GET request with urllib3:

    import urllib3
    http = urllib3.PoolManager()
    response = http.request('GET', '')

    urllib3 provides:

  • Direct control over headers, redirection, retries
  • Connection pooling and thread safety
  • Support for SOCKS/HTTPS proxies
  • Monitoring of connection pool metrics
  • Integration with logging, caching, authentication, and more
  • In essence, urllib3 gives you levers to tweak when you need more control.

    When to Use urllib3

    Use urllib3 when:

  • Building a HTTP client with custom logic
  • Advanced usage like proxies, special authentication
  • Optimizing connections with pooling/threading
  • Low-level performance tuning and monitoring
  • Integration with databases, loggers, etc
  • If Requests feels too simplistic, urllib3 offers the hooks to manage connections your way.

    Putting it Together

    To recap, here are some guidelines on choosing a HTTP client:

  • Requests - Simple interface, beginner friendly, covers 80% of use cases
  • urllib3 - Lower level but more control, good for advanced usage
  • Consider using Requests first, then optimize with urllib3 as needed
  • Requests is great for getting started quickly. Urllib3 offers more customization for complex cases.

    Hope this gives you a better sense of when to use Requests vs urllib3!

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