[docs]
class UserFacingError(Exception, Localizable):
"""
A localizable, user-facing error.
This type of error is fatal, but fixing it does not require knowledge of Betty's internals or the stack trace
leading to the error. It must therefore have an end-user-friendly message, and its stack trace must not be shown.
"""
[docs]
def __init__(self, message: Localizable):
from betty.locale.localizer import DEFAULT_LOCALIZER
super().__init__(
# Provide a default localization so this exception can be displayed like any other.
message.localize(DEFAULT_LOCALIZER),
)
self._localizable_message = message
def __str__(self) -> str:
from betty.locale.localizer import DEFAULT_LOCALIZER
return self.localize(DEFAULT_LOCALIZER)