我有以下词典:
dict_2 = {
'key1': {'subkey1': 2, 'subkey2': 7, 'subkey3': 5},
'key2': {'subkey1': None, 'subkey2': None, 'subkey3': None},
}
我期待从dict_2
中的None
值中清除subkeys
,删除整个密钥及其嵌套字典:
简而言之,我的输出应该是:
dict_2={key1:{subkey1:2,subkey2:7,subkey3:5}}
我尝试的是:
glob_dict={}
for k,v in dict_2.items():
dictionary={k: dict_2[k] for k in dict_2 if not None (dict_2[k]
['subkey2'])}
if bool(glob_dict)==False:
glob_dict=dictionary
else:
glob_dict={**glob_dict,**dictionary}
print(glob_dict)
我目前的输出是:
TypeError: 'NoneType' object is not callable
我不确定循环是否是摆脱嵌套循环的None
值的最佳方法,我不确定如何表达我想要摆脱{ {1}}值。
答案 0 :(得分:4)
删除所有SET LANGUAGE us_english
和后续空字符的递归解决方案可以看作:
None
def remove_empties_from_dict(a_dict):
new_dict = {}
for k, v in a_dict.items():
if isinstance(v, dict):
v = remove_empties_from_dict(v)
if v is not None:
new_dict[k] = v
return new_dict or None
dict_2 = {
'key1': {'subkey1': 2, 'subkey2': 7, 'subkey3': 5},
'key2': {'subkey1': None, 'subkey2': None, 'subkey3': None},
}
print(remove_empties_from_dict(dict_2))
答案 1 :(得分:1)
dict_2={'key1':{'subkey1':2,'subkey2':7,'subkey3':5} ,'key2':{'subkey1':None,'subkey2':None,'subkey3':None}}
d = {}
for k, v in dict_2.iteritems():
if any(v.values()):
d[k] = v
print d
结果:
{'key1': {'subkey2': 7, 'subkey3': 5, 'subkey1': 2}}