Using python to dump hexadecimals into YAML

Question

Now I\'m dumping into a YAML document. It\'s working as it should for the most part. When I try to dump a hexadecimal such as \"0x2A\" it converts to 42. Isn\'t there any wa

Answer 1

This should do it:

>>> import yaml
>>> class HexInt(int): pass
... 
>>> def representer(dumper, data):
...     return yaml.ScalarNode('tag:yaml.org,2002:int', hex(data))
... 
>>> yaml.add_representer(HexInt, representer)
>>> yaml.dump({"n": HexInt(42)})
'{n: 0x2a}\n'