21 lines
527 B
Python
21 lines
527 B
Python
import abc
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class LibrarianException(Exception, metaclass=abc.ABCMeta):
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@abc.abstractproperty
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def error_msg(self):
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pass
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def __str__(self):
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return self.error_msg
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class PermissionsError(LibrarianException):
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def __init__(self, permission_string):
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self.permission_string = permission_string
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@property
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def error_msg(self):
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return "Need privilege level {}".format(self.permission_string)
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class NoHighlightedEntry(LibrarianException):
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error_msg = "No highlighted entry"
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