user-agent Python Library

Warnings

• beta The library is currently in 'Development Status :: 4 - Beta', which means its API might not be entirely stable and could undergo changes in future releases. It may not be fully production-ready for critical applications.
  Fix: Review the project's PyPI page and any potential GitHub repository for updates on stability and breaking changes. Consider locking the dependency version tightly.
• gotcha This library is solely for *generating* user agent strings and navigator objects, not for *parsing* an existing user agent string to extract browser, OS, or device information. Attempting to use its functions for parsing will not work. For parsing, consider libraries like `user-agents` (plural) or `ua-parser`.
  Fix: Ensure you use the correct library for your task: `user-agent` for generation, `user-agents` or `ua-parser` for parsing.
• gotcha While the package's metadata indicates compatibility with `Python >=2.7`, Python 2.7 has reached its End-of-Life. Using this library in environments that rely on Python 2.7 might introduce compatibility issues or security vulnerabilities in modern projects. It's recommended to use it with Python 3.x.
  Fix: Ensure your project runs on Python 3.x. If Python 2.7 is a hard requirement, be aware of the associated risks.
• gotcha The `generate_user_agent()` function produces valid, random user agents, but there is no explicit mechanism documented on its PyPI page to ensure these are always the *latest* or most current browser versions. Websites frequently update their anti-bot measures, and using outdated user agents can lead to requests being blocked or flagged.
  Fix: For applications requiring highly current user agents (e.g., intensive web scraping), consider combining this library with a regularly updated list of user agents or using libraries like `fake-useragent` that specialize in keeping their user agent database up-to-date.
• gotcha A common mistake in web scraping is to generate a single user-agent string and reuse it for all requests. Even a realistic user-agent will eventually get flagged if it makes too many requests from the same IP address in a short period, signaling automated behavior.
  Fix: Implement a user-agent rotation strategy by calling `generate_user_agent()` for each request or regularly rotating from a list of generated user agents.

Install

• pip install user-agent Install stable version

Imports

• generate_user_agent

  from user_agent import generate_user_agent

• generate_navigator

  from user_agent import generate_navigator

Quickstart

This quickstart demonstrates how to generate random user agent strings and navigator objects using `generate_user_agent` and `generate_navigator` functions. It also shows how to filter generation by operating system or navigator type.

from user_agent import generate_user_agent, generate_navigator

# Generate a random user agent string
random_ua = generate_user_agent()
print(f"Generated User-Agent: {random_ua}")

# Generate a navigator object (dictionary)
navigator_obj = generate_navigator()
print(f"Generated Navigator Object: {navigator_obj}")

# Example of generating a user agent for a specific OS/browser
mac_firefox_ua = generate_user_agent(os=('mac',), navigator='firefox')
print(f"Mac Firefox User-Agent: {mac_firefox_ua}")