[英]Transform nested dict into key value
我有一個復雜的字典,像這樣:
d = {
"key1": "value1",
"key2": {
"key3": "value3",
"key4": {
"key5": "value5",
"key6": [{"keys1": "value_keys1"}]
}
}
我想打開一個簡單的鍵值
{
"key1": "value1",
"key2_key3": "value3",
"key2_key4_key5": "value5",
"key2_key4_key6_0_keys1": "value_keys1",
}
我怎么能在python上做到這一點?
我試過這個:
def flat_dict_helper(prepend, d):
if len(prepend) > 0:
prepend = prepend + "_"
for k in d:
i = d[k]
if isinstance(i, dict):
r = flat_dict_helper(prepend + k, i)
for j in r:
yield j
else:
yield (prepend + k, i)
def flat_dict(d):
return dict(flat_dict_helper("", d))
但這在某些情況下不起作用,例如當里面有一個列表時
您必須在列表的情況下指定行為:
def flat_dict_helper(prepend, d):
prepend += "_" if len(prepend) else prepend
for k in d:
i = d[k]
if isinstance(i, dict):
r = flat_dict_helper(prepend + k, i)
for j in r:
yield j
elif isinstance(i, list):
for idx, element in enumerate(i):
r = flat_dict_helper('{}{}_{}'.format(prepend, k, idx), element)
for j in r:
yield j
else:
yield (prepend + k, i)
def flat_dict(d):
return dict(flat_dict_helper("", d))
>>> flat_dict(d)
{'key1': 'value1', 'key2_key3': 'value3', 'key2_key4_key5': 'value5', 'key2_key4_key6_0_keys1': 'value_keys1'}
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