pykon 0.3

A module allowing for constant and publicly immutable data.

                    ██████╗ ██╗   ██╗██╗  ██╗ ██████╗ ███╗   ██╗
                    ██╔══██╗╚██╗ ██╔╝██║ ██╔╝██╔═══██╗████╗  ██║
                    ██████╔╝ ╚████╔╝ █████╔╝ ██║   ██║██╔██╗ ██║
                    ██╔═══╝   ╚██╔╝  ██╔═██╗ ██║   ██║██║╚██╗██║
                    ██║        ██║   ██║  ██╗╚██████╔╝██║ ╚████║
                    ╚═╝        ╚═╝   ╚═╝  ╚═╝ ╚═════╝ ╚═╝  ╚═══╝

Pykon is a way to allow constant and publicly immutable data.

Though, data can be modified its type cannot.

With Pykon, an error is stored in the error instance variable rather than being raised. This gives the user the ability to control when an error should and shouldn't be raised.

Example

from pykon import Pykon
from typing import Union

mylist: Pykon = Pykon(list, [1,2,3,4])

if hasattr(mylist, "error"):
    raise mylist.error
else:
    print(mylist.data)


# Using a try except block
#
# try:
#    print(mylist.data)
# except AttributeError:
#    raise mylist.error


# Return a PykonError from a function
#
# def test() -> Union[None, Pykon.PykonError]:
#     constantInt: Pykon = Pykon(int, 20)
#     if hasattr(constantInt, "data"):
#         print(constantInt.data)
#         return None
#     else:
#         return constantInt.error