def flatten(d: collections.MutableMapping,
parent_key: str = '',
sep: str = '_') -> dict:
"""
flatten a dict
credit goes to https://stackoverflow.com/a/6027615/13224997
Parameters
----------
d : dict
dictionary to be flattened
parent_key : str
used internally for appending to a dict
sep : str
separating character in the flattened dict keys
Returns
-------
dict
the flattened dict.
"""
items = []
for k, v in d.items():
new_key = parent_key + sep + k if parent_key else k
if isinstance(v, collections.MutableMapping):
items.extend(flatten(v, new_key, sep=sep).items())
else:
items.append((new_key, v))
return dict(items)
def introspect(d: collections.MutableMapping,
parent_key: str = '',
sep: str = '.') -> dict:
items = []
for k, v in d.items():
new_key = parent_key + sep + str(k) if parent_key else str(k)
if isinstance(v, collections.MutableMapping):
items.extend(introspect(v, new_key, sep=sep).items())
else:
items.append((new_key, v))
return dict(items)
def flatten_dict(
data: collections.MutableMapping,
parent_key: str = "",
sep: Optional[str] = None,
) -> dict:
"""Return nested dict as single level dict."""
sep = sep or DRF_EXCEPTIONS_SEPARATOR
items: list = []
for k, v in data.items():
new_key = sep.join([parent_key, k]) if parent_key and sep else k
if isinstance(v, collections.MutableMapping):
items.extend(flatten_dict(v, new_key, sep=sep).items())
else:
items.append((new_key, v))
return dict(items)
def result_to_flat_dict(record: collections.MutableMapping,
parent: str = '',
sep: str = '__') -> Dict:
items: List = []
for k, v in record.items():
if not parent or k.startswith('weapon'):
new_key = k
else:
new_key = f"{parent}{sep}{k}"
if isinstance(v, collections.MutableMapping):
items.extend(result_to_flat_dict(v, new_key, sep=sep).items())
else:
items.append((new_key, v))
return dict(items)
def flatten(d: collections.MutableMapping, parent_key='', sep='.') -> dict:
"""flattens directory so there isn't any dict or list in items
renames keys of nested dictionaries, so that there are no conflicts
>>> flatten({'a': 1, 'c': {'a': 2, 'b': {'x': 5, 'y' : 10}}, 'd': [1, 2, 3]})
{'a': 1, 'c.a': 2, 'c.b.x': 5, 'c.b.y': 10, 'd.0': 1, 'd.1': 2, 'd.2': 3}
"""
items = []
for k, v in d.items():
new_key = parent_key + sep + k if parent_key else k
if isinstance(v, dict):
items.extend(flatten(v, new_key, sep=sep).items())
elif isinstance(v, (tuple, list, set)):
items.extend(
flatten(
dict([(new_key + '.' + str(idx), itm)
for idx, itm in enumerate(v)])).items())
else:
items.append((new_key, v))
return dict(items)
def items(self):
"""Explicit use of MutableMapping attributes."""
return MutableMapping.items(self)
