24 lines
627 B
Python
24 lines
627 B
Python
from collections import OrderedDict
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def _attr_key(attr):
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"""Returns appropriate key for sorting attribute names
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Attribute names are a tuple of ``(namespace, name)`` where namespace can be
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``None`` or a string. These can't be compared in Python 3, so we conver the
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``None`` to an empty string.
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"""
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key = (attr[0][0] or ''), attr[0][1]
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return key
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def alphabetize_attributes(attrs):
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"""Takes a dict of attributes (or None) and returns them alphabetized"""
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if not attrs:
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return attrs
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return OrderedDict(
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[(k, v) for k, v in sorted(attrs.items(), key=_attr_key)]
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)
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