从列表和逗号分隔行创建python字典

Question

是否有更优雅的方式python来创建一个dictionary来自a list和cs line一个循环？

my_master_list = ["ABC", "DEF", "GHI"]
my_list = ["field1", "field2", "field3"]
my_line = "test1,test2,test3"
my_dict = {}

for x in my_master_list:
    my_dict[x] = {}
    line_parts = my_line.split(",")
    n = 0
    for y in my_list:
        my_dict[x][y] = line_parts[n]
        n +=1

print my_dict
# {'ABC': {'field2': 'test2', 'field3': 'test3', 'field1': 'test1'}, 'GHI': {'field2': 'test2', 'field3': 'test3', 'field1': 'test1'}, 'DEF': {'field2': 'test2', 'field3': 'test3', 'field1': 'test1'}}

Answer 1

您可以使用zip一个字典解析:

# construct the inner dictionary 
d = dict(zip(my_list, my_line.split(",")))

# construct the outer dictionary, if you don't want to make copies, you can use 
# {master_key: d ... } directly here just keep in mind they are referring to the same 
# object in this way
{master_key: d.copy() for master_key in my_master_list}

#{'ABC': {'field1': 'test1', 'field2': 'test2', 'field3': 'test3'},
# 'DEF': {'field1': 'test1', 'field2': 'test2', 'field3': 'test3'},
# 'GHI': {'field1': 'test1', 'field2': 'test2', 'field3': 'test3'}}