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"""Util functions used by Netdisco."""
from collections import defaultdict
from typing import Any, Dict, List, Optional # noqa: F401
# Taken from http://stackoverflow.com/a/10077069
# pylint: disable=invalid-name
def etree_to_dict(t):
"""Convert an ETree object to a dict."""
# strip namespace
tag_name = t.tag[t.tag.find("}")+1:]
d = {
tag_name: {} if t.attrib else None
} # type: Dict[str, Optional[Dict[str, Any]]]
children = list(t)
if children:
dd = defaultdict(list) # type: Dict[str, List]
for dc in map(etree_to_dict, children):
for k, v in dc.items():
dd[k].append(v)
d = {tag_name: {k: v[0] if len(v) == 1 else v for k, v in dd.items()}}
dt = d[tag_name]
if t.attrib:
assert dt is not None
dt.update(('@' + k, v) for k, v in t.attrib.items())
if t.text:
text = t.text.strip()
if children or t.attrib:
if text:
assert dt is not None
dt['#text'] = text
else:
d[tag_name] = text
return d
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