[Andreas Tille, 2014-02-13] > I'm trying to package spades[1] and found the following code inside an > __init__.py file: > > > ... > > class YAMLObjectMetaclass(type): > """ > The metaclass for YAMLObject. > """ > def __init__(cls, name, bases, kwds): > super(YAMLObjectMetaclass, cls).__init__(name, bases, kwds) > if 'yaml_tag' in kwds and kwds['yaml_tag'] is not None: > cls.yaml_loader.add_constructor(cls.yaml_tag, cls.from_yaml) > cls.yaml_dumper.add_representer(cls, cls.to_yaml) > > class YAMLObject(metaclass=YAMLObjectMetaclass): > """ > An object that can dump itself to a YAML stream > and load itself from a YAML stream. > """ > > __slots__ = () # no direct instantiation, so allow immutable subclasses > > yaml_loader = Loader > yaml_dumper = Dumper > > > ... > > > which ends up in > > > File "/usr/share/spades/pyyaml3/__init__.py", line 284 > class YAMLObject(metaclass=YAMLObjectMetaclass): > ^ > SyntaxError: invalid syntax
you invoked it using python2.X > I'm not a very skilled Python coder but IMHO the critical line should be > replaced by > > > class YAMLObject(YAMLObjectMetaclass): > > no, metaclass keyword argument was introduced in Python 3.0 -- Piotr Ożarowski Debian GNU/Linux Developer www.ozarowski.pl www.griffith.cc www.debian.org GPG Fingerprint: 1D2F A898 58DA AF62 1786 2DF7 AEF6 F1A2 A745 7645 -- To UNSUBSCRIBE, email to debian-python-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20140213164952.gf3...@sts0.p1otr.com
