If we have a condition: cnd = Value.dtype.equal_to(str), we can test a datum like this: cnd.test('hello') -> bool. But if we have a rule with an empty path argument:
rule = Rule(path=[], condition=cnd)
...we cannot test a scalar datum in the same way:
rule.test('hello') # raises TypeError...because we cast "hello" to a Data object, which expects a list or dict.
The workaround is to wrap the datum in a list and set the path to the first list element, like this:
rule = Rule(path=[0], condition=cnd)
rule.test(["hello"]) # success
If we have a condition:
cnd = Value.dtype.equal_to(str), we can test a datum like this:cnd.test('hello') -> bool. But if we have a rule with an emptypathargument:...we cannot test a scalar datum in the same way:
...because we cast "hello" to a
Dataobject, which expects a list or dict.The workaround is to wrap the datum in a list and set the path to the first list element, like this: