如何将元素添加到JSON字符串中，该字符串依赖于Python中该字符串的另一个元素

我试图向JSON字符串中添加一个元素，该字符串由该字符串中的元素值组成。 例如，我的字符串是：

{'stock': [{'weight': '80', 'warehouse': 1}, {'weight': '40', 'warehouse': 2}, {'weight': '100', 'warehouse': 1}...]}

我想在“weight”元素中添加一个文本，然后将新元素另存为“value”。所以结果应该是这样的：

{'products': [{'weight': '80', 'warehouse': 1, 'value': 'weight 80 lbs'}, {'weight': '40', 'warehouse': 2, 'value': 'weight 40 lbs'}, {'weight': '100', 'warehouse': 1, 'value': 'weight 100 lbs'}...]}

---

我要编辑的JSON字符串的“产品”比这个示例字符串多得多。

看起来您可以只更新列表项：

dd = {'stock': [{'weight': '80', 'warehouse': 1}, {'weight': '40', 'warehouse': 2}, {'weight': '100', 'warehouse': 1}]}

for d in dd['stock']:
    d['value'] = 'weight ' + d['weight'] + ' lbs'
    
print(dd) 

输出

{'stock': [{'weight': '80', 'warehouse': 1, 'value': 'weight 80 lbs'}, {'weight': '40', 'warehouse': 2, 'value': 'weight 40 lbs'}, {'weight': '100', 'warehouse': 1, 'value': 'weight 100 lbs'}]}

{
'stock': [
    {'weight': '80', 'warehouse': 1, 'value': 'weight 80 lbs'},
    {'weight': '40', 'warehouse': 2, 'value': 'weight 40 lbs'},
    {'weight': '100', 'warehouse': 1, 'value': 'weight 100 lbs'}
]}

---

如果另一个答案令人困惑，请给出第二个答案

dict = {'stock': [ {'weight': '80', 'warehouse': 1}, {'weight': '40', 'warehouse': 2}, {'weight': '100', 'warehouse': 1} ]}

# loop throught keys
     # loop through values of keys
         # append new value to list

for key in dict:
    for values in dict[key]:
        values["value"] = "weight " + values["weight"]+ " lbs";

print(dict)

我建议你多了解一些

输出

{'stock': [{'weight': '80', 'warehouse': 1, 'value': 'weight 80 lbs'}, {'weight': '40', 'warehouse': 2, 'value': 'weight 40 lbs'}, {'weight': '100', 'warehouse': 1, 'value': 'weight 100 lbs'}]}

{
'stock': [
    {'weight': '80', 'warehouse': 1, 'value': 'weight 80 lbs'},
    {'weight': '40', 'warehouse': 2, 'value': 'weight 40 lbs'},
    {'weight': '100', 'warehouse': 1, 'value': 'weight 100 lbs'}
]}