Python is a very versatile programming language and can be used for a wide variety of tasks. It is often used in commercial projects, as well as in academia, scientific research, data analysis, artificial intelligence, and more.

Python can be used for developing large-scale commercial projects such as web applications, machine learning algorithms, desktop GUI applications, games, and more. Some examples of commercial projects developed using Python include:

1. Instagram - uses Python's Django web framework for its backend.
2. Spotify - Python is used for its data analytics tool.
3. Uber - uses Python for data analysis and as a framework for its machine learning models.
4. Dropbox - Python provides tools for its backend and system services.
5. Google - uses Python for its search engine algorithms and machine learning-based services.

Aside from these big names, there are many other examples of companies and startups built on Python, that include:

- PayPal
- Mozilla
- Quora
- Reddit
- SurveyMonkey
- NASA

In a nutshell, Python is a language that can handle almost all tasks you will come across in any commercial projects, and it is a popular choice among developers for its ease of use, readability, and low learning curve.
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