如何在python中将字典的内容附加到列表中？

我正在读取一个csv文件filename.csv，我没有得到如下所示的预期结果

---

[{‘大陆’：‘欧洲’，‘国家’：‘西班牙’，‘首都’：‘马德里’，{‘大陆’：‘欧洲’，‘国家’，‘葡萄牙’，‘首都’：‘里斯本’，{‘大陆’：‘欧洲’，‘国家’：‘英格兰’，‘首都’：‘伦敦’}]

将您的声明移动到

dict_places

循环内：

import csv

with open('filename.csv') as csv_file:
    datarow = csv.reader(filename, delimiter=',')
    dict_places = {}
    list_places = []
    for row in datarow:
        dict_places['Continent'] = row[0]
        dict_places['Country'] = row[1]
        dict_places['Capital'] = row[2]
        print(list_places.append(dict_places))

否则，您只需在每次迭代中替换同一个字典中的值，最后得到同一个字典

的列表，就应该考虑使用这个。它将为你做艰苦的工作，并使像这样的错误不太可能发生。您只需传入列名列表：

list_places = []
for row in datarow:
    dict_places = {}
    dict_places['Continent'] = row[0]
    dict_places['Country'] = row[1]
    dict_places['Capital'] = row[2]
    print(list_places.append(dict_places))

印刷品：

import csv
with open(path) as csvfile:
    rows = csv.DictReader(csvfile, ['Continent','Country', 'Capital'])
    list_places = [dict(row) for row in rows]

print(list_places)

​

[{'Continent': 'Europe', 'Country': 'Spain', 'Capital': 'Madrid'},
 {'Continent': 'Europe', 'Country': 'Portugal', 'Capital': 'Lisbon'}, 
 {'Continent': 'Europe', 'Country': 'England', 'Capital': 'London'}]