How to disable the reference feature when outputting PyYaml

If you do yaml.dump without setting anything, the reference function will be used. It may not be necessary.

import yaml


person = {
    "name": "foo",
    "age": 20
}
d = [person, person]

print(yaml.dump(d))

For example, the output is as follows.

- &id001 {age: 20, name: foo}
- *id001

You can pass the Dumper option to yaml.dump. Then, the ignore_aliases () method of the Dumper class passed here should return True.

class IgnoreReferenceDumper(yaml.Dumper):
    def ignore_aliases(self, data):
        return True

print(yaml.dump(d, Dumper=IgnoreReferenceDumper))

Peace has come.

- {age: 20, name: foo}
- {age: 20, name: foo}

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