Rust-like Option and Result types in Python, slotted and fully typed.
An Option type represents an optional value, every Option is either Some and contains Some value, or NONE
A Result type represents a value that might be an error. Every Result is either Ok and contains a success value, or Err and contains an error value.
Using an Option type forces you to deal with None values in your code and increase type safety.
Using a Result type simplifies error handling and reduces try except blocks.
from option import Result, Option, Ok, Err
from requests import get
def call_api(url, params) -> Result[dict, int]:
result = get(url, params)
code = result.status_code
if code == 200:
return Ok(result.json())
return Err(code)
def calculate(url, params) -> Option[int]:
return call_api(url, params).ok().map(len)
dict_len = calculate('https://example.com', {})Option can be installed from PyPi:
pip install optionThe documentation lives at https://mat1g3r.github.io/option/
MIT