连接python字典中的值

Question

我有一个python字典，我想将value [0]的值和值[1]的列表连接起来

如此

dict={       'Key1':['MASTER',['_A','_B','_C']]}

并且调用Key1的预期输出是

[['MASTER_A','MASTER_B','MASTER_C']]

Answer 1

使用嵌套理解：

d = {'Key1':['MASTER',['_A','_B','_C']]}
result_dict = {k: [v[0] + l for l in v[1]] for k,v in d.items()}

例如：

>>> result_dict = {k: [v[0] + l for l in v[1]] for k,v in d.items()}
>>> result_dict
{'Key1': ['MASTER_A', 'MASTER_B', 'MASTER_C']}

Answer 2

尝试一下：

d = {'Key1':['MASTER',['_A','_B','_C']]}
out = [d['Key1'][0]+i for i in d['Key1'][1]]

输出：

['MASTER_A', 'MASTER_B', 'MASTER_C']

要将其分配给密钥，请执行：

d['Key1'] = out