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This is more of a general Python question than specific to Yamale, I guess.
PyLance complains about how Yamale implements the tag
attribute on validators.
class SomeValidator(Validator):
tag = "some_validator"
def _is_valid(self, value):
if value:
return True
return False
def fail(self, value):
return f"Value '{value}' is not valid."
Expression of type "Literal['some_validator']" cannot be assigned to declared type "property" "Literal['some_validator']" is incompatible with "property"
The validator works of course, as this is how the tags are implemented by default.
Is there a reason as to why tag
was implemented as a property instead of as a class attribute (which PyLance does not complain about)? E.g
class Validator(object):
"""Base class for all Validators"""
constraints = []
value_type = None
def __init__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.tag = self.__class__
...
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