擅长:python、mysql、java
<p>您可以迭代原始字典并将新的键附加到新字典中,如果键已经存在,则将当前值添加到原始值中。你知道吗</p>
<pre><code>item_dict = {
"item_C_v001" : 100,
"item_C_v002" : 100,
"item_A_v001" : 50,
"item_B_v001" : 75
}
new_dict = {}
for k, v in item_dict.items():
k_new = k[:-3]
new_dict[k_new] = new_dict[k_new] + v if k_new in new_dict.keys() else v
print (new_dict)
>>> {'item_A_v': 50, 'item_C_v': 200, 'item_B_v': 75}
</code></pre>