通过键合并 2 个字典而不覆盖

Merging 2 dictionaries by keys without overwriting

假设我有 2 部词典:

ss = {'1':{'tier 1': {'valid_detailed': 66, 'valid_approx': 68, 'valid_unmapped': 56, 'valid_total': 288}}}
tt = {'1':{'tier 2': {'valid_detailed': 44, 'valid_approx': 33, 'valid_unmapped': 22, 'valid_total': 111}}}

我想将它们合并在一起,但不覆盖键,只有当键不同时才添加新项目。基本上,我想得到这个:

zz = {'1':{'tier 1': {'valid_detailed': 66, 'valid_approx': 68, 'valid_unmapped': 56, 'valid_total': 288}, 'tier 2': {'valid_detailed': 44, 'valid_approx': 33, 'valid_unmapped': 22, 'valid_total': 111}}}

到目前为止,我试过这个:

result_dict = {}
  dicts = [ss, tt]
  for d in dicts:
    for k, v in d.items():
      result_dict.setdefault(k, []).extend(v)

差不多可以了。我最终得到了这个,这不是我想要的:

result_dict
>>>{'tier 1': ['valid_all_row', 'all_all_row', 'valid_all_row', 'all_all_row'],'tier 2': ['valid_all_row', 'all_all_row', 'valid_all_row', 'all_all_row']}

我怎样才能做到这一点?

ss = {'tier 1': {'valid_detailed': 66, 'valid_approx': 68, 'valid_unmapped': 56, 'valid_total': 288}}

tt = {'tier 2': {'valid_detailed': 44, 'valid_approx': 33, 'valid_unmapped': 22, 'valid_total': 111}}

zz={}
for i in ss.keys():
    zz[i]=ss[i]

for i in tt.keys():
    zz[i]=tt[i]

结果:

zz={'tier 1': {'valid_detailed': 66,
  'valid_approx': 68,
  'valid_unmapped': 56,
  'valid_total': 288},
 'tier 2': {'valid_detailed': 44,
  'valid_approx': 33,
  'valid_unmapped': 22,
  'valid_total': 111}}