要在python中将字典列表转换为列表列吗

Question

我有一个字典列表lst，每个字典都有相同的两个键，每个键的值都不同。我希望它们以单个字典的形式出现dict 其中两个键的所有值都包含在一个列表中。记住，键是从变量dimLst和metricLst中获取的，否则它们是未知的。。有什么想法吗？你知道吗

lst = [
    {'Location': 'ANNEX', 'ToTal_Dwell': 60.0},
    {'Location': 'CHENNAI', 'ToTal_Dwell': 86.0},
    {'Location': 'DADRI', 'ToTal_Dwell': 108.0},
    {'Location': 'JNPT', 'ToTal_Dwell': 39.0},
    {'Location': 'KOLKATA', 'ToTal_Dwell': 67.0},
    {'Location': 'MUNDRA', 'ToTal_Dwell': 82.0}
]

dimLst = ['Location']
metricsLst = ['ToTal_Dwell']

我期望输出如下：

dict = {
    'Location': 
        ['ANNEX', 'CHENNAI', 'DADRI', 'JNPT', 'KOLKATA', 'MUNDRA'],
    'ToTal_Dwell': 
        [60.0, 86.0, 108.0, 39.0, 67.0, 82.0]
}

Answer 1

使用字典理解：

>>> {k: [d[k] for d in lst] for k in lst[0]}
{'Location': ['ANNEX', 'CHENNAI', 'DADRI', 'JNPT', 'KOLKATA', 'MUNDRA'], 'ToTal_Dwell': [60.0, 86.0, 108.0, 39.0, 67.0, 82.0]}

Answer 2

这是除词典理解之外的另一种解决方法

lst = [
    {'Location': 'ANNEX', 'ToTal_Dwell': 60.0},
    {'Location': 'CHENNAI', 'ToTal_Dwell': 86.0},
    {'Location': 'DADRI', 'ToTal_Dwell': 108.0},
    {'Location': 'JNPT', 'ToTal_Dwell': 39.0},
    {'Location': 'KOLKATA', 'ToTal_Dwell': 67.0},
    {'Location': 'MUNDRA', 'ToTal_Dwell': 82.0}
]

locationList = []
dwellList = []
locDict = {}

for i in lst:
    locationList.append(i['Location'])
    dwellList.append(i['ToTal_Dwell'])

locDict['Location'] = locationList
locDict['ToTal_Dwell'] = dwellList
print(locDict)