def from_id(cls, method_class, method_id):
"""Look up Method class based on method_class and method_id numbers."""
for method in get_all_subclasses(Method):
if method.method_class == method_class and method.method_id == method_id:
return method
else:
raise ValueError("Unknown method for class {} and method_id {}".format(method_class, method_id))
def from_code(cls, code):
"""Look up error class based on code."""
for subcls in get_all_subclasses(cls):
if subcls.code == code:
return subcls
raise ValueError("No known subclass for code: {!r}".format(code))
def get_by_class(cls, method_class):
for subcls in get_all_subclasses(cls):
if subcls.method_class == method_class:
return subcls
raise ValueError("No Properties defined for method class {:x}".format(method_class))
