我想用嵌套字典中的空字符串替换 None 。test={ "order":1234, "status":"delivered", "items":[ { "name":"sample1", "code":"ASU123", "unit":None } ], "product":{"name":None,"code":None} }我想用空字符串替换 None 并将字典的转换存储到另一个变量(如 test1)中。以下代码不允许我将其存储在另一个变量中。def replace_none(test_dict): # checking for dictionary and replacing if None if isinstance(test_dict, dict): for key in test_dict: if test_dict[key] is None: test_dict[key] = '' else: replace_none(test_dict[key]) # checking for list, and testing for each value elif isinstance(test_dict, list): for val in test_dict: replace_none(val)
1 回答
慕仙森
TA贡献1827条经验 获得超7个赞
您可以首先进行深度复制,然后对复制的字典执行您的功能:
import copy
b = copy.deepcopy(test)
replace_none(b)
print(test)
print(b)
输出:
{'order': 1234, 'status': 'delivered', 'items': [{'name': 'sample1', 'code': 'ASU123', 'unit': None}], 'product': {'name': None, 'code': None}}
{'order': 1234, 'status': 'delivered', 'items': [{'name': 'sample1', 'code': 'ASU123', 'unit': ''}], 'product': {'name': '', 'code': ''}}
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