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Reduce and Prepend solution in Creative category for The Flat Dictionary by jtokaz
from functools import reduce
def flatten(d,prepend=''):
if d and type(d)==dict:
return reduce(lambda x,y:dict(flatten(d[y],prepend+'/'+y),**x),d,{})
else:
return {prepend[1:]:d or ''}
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert flatten({"key": "value"}) == {"key": "value"}, "Simple"
assert flatten(
{"key": {"deeper": {"more": {"enough": "value"}}}}
) == {"key/deeper/more/enough": "value"}, "Nested"
assert flatten({"empty": {}}) == {"empty": ""}, "Empty value"
assert flatten({"name": {
"first": "One",
"last": "Drone"},
"job": "scout",
"recent": {},
"additional": {
"place": {
"zone": "1",
"cell": "2"}}}
) == {"name/first": "One",
"name/last": "Drone",
"job": "scout",
"recent": "",
"additional/place/zone": "1",
"additional/place/cell": "2"}
Nov. 3, 2017
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