python - 如何通过循环嵌套字典和列表到字典？

Question

我在理解如何自动嵌套字典时遇到问题。在脚本中，我需要一个包含包含列表的字典的字典。像这样:

week{
    1:{
        m: [],
        l: [],
        d: []
    },
    2:{
        m: [],
        l: [],
        d: []
    },
    # ...
}

我尝试过的:

commands = ["m", "ml", "l", "ld", "d"] # want to use them as keys
week = {}
for d in range(7):
    d += 1
    week[d] = {}
    for t in commands:
        day = {}
        day[t] = []
        week[d] = day
print(week)

# Output:
{1: {'d': []}, 2: {'d': []}, 3: {'d': []}, 4: {'d': []}, 5: {'d': []}, 6: {'d': []}, 7: {'d': []}}

Answer 1

您正在 for t in 命令循环中创建 day 字典。尝试这样做:

week[d] = {}  # Let this line to be 1
day = {}
for t in commands:
    day[t] = []
week[d] = day # If you wrote this line, you don`t need line 1 anymore