jstraitlets.py 文件源码

def validate(self, obj, value):
        if self.allow_undefined and value is undefined:
            return value
        value = super(JSONArray, self).validate(obj, value)
        if self.uniqueItems and not _has_unique_elements(value):
            raise T.TraitError(
                "The value of the '{name}' trait of {klass} instance should "
                "have unique elements".format(
                    name=self.name, klass=class_of(obj)))
        return value

    # Need to bypass the dynamic default in T.Container() in the case that
    # the trait is undefined