Stop Letting Python Functions Lie to You: Introducing explicit-result

📰 Dev.to · chukwunwike obodo

Learn to use explicit-result, a Python library for predictable and typed error handling, to improve your code's reliability and readability.

intermediate Published 29 Apr 2026
Action Steps
  1. Install the explicit-result library using pip: `pip install explicit-result`
  2. Import the library in your Python code: `from explicit_result import Result`
  3. Use the `Result` class to wrap your functions and handle errors explicitly: `def get_user(user_id: int) -> Result[User, Error]: ...`
  4. Use the `success` and `failure` methods to handle the result of a function call: `result = get_user(1); if result.success: ... else: ...`
  5. Explore the library's documentation and examples to learn more about its features and usage.
Who Needs to Know This

This library is useful for developers who want to write more robust and maintainable code, especially in teams where code review and collaboration are essential.

Key Insight

💡 Explicit error handling can make your code more readable and maintainable, and libraries like explicit-result can help you achieve this.

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🚀 Improve your Python code's reliability with explicit-result, a library for predictable and typed error handling! 📚

Key Takeaways

Learn to use explicit-result, a Python library for predictable and typed error handling, to improve your code's reliability and readability.

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Title: Stop Letting Python Functions Lie to You: Introducing explicit-result

URL Source: https://dev.to/chuks_archy/stop-letting-python-functions-lie-to-you-introducing-explicit-result-4gg5

Published Time: 2026-04-29T21:26:07Z

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Posted on Apr 29

# Stop Letting Python Functions Lie to You: Introducing explicit-result

[#programming](https://dev.to/t/programming)[#tutorial](https://dev.to/t/tutorial)[#python](https://dev.to/t/python)[#opensource](https://dev.to/t/opensource)

Python is beautiful, readable, and highly expressive. But its built-in error handling mechanism, exceptions, has a fundamental flaw: **Exceptions are invisible.**

Take a look at this standard Python function signature:

```
def get_user(user_id: int) -> User:
...
```

What does this signature tell you? It promises to return a `User`. But does it? What happens if t
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