Question

我正在尝试将多个词典转换为单个列表，例如

        for data in result:

        dic = { "student_names" : str(data[1]),
                "student_department" : str(data[7])}

        print dic

输出

{'student_names': 'Shahroz Akbar', 'student_department': 'computer science'}
{'student_names': 'Ahsan Mehmood', 'student_department': 'computer science'}
{'student_names': 'Hamza Anwar', 'student_department': 'computer science'}

我想这样转换

list1 = [{'student_names': 'Shahroz Akbar', 'student_department': 'computer science'},
{'student_names': 'Ahsan Mehmood', 'student_department': 'computer science '},
'student_names': 'Hamza Anwar', 'student_department': 'computer science'}]

Answer 1

将每个字典作为一个项目存储在列表中与您拥有的非常相似。无需打印信息，您只需将每个项目.append()放入列表中。

list1 = []
for data in result:
    dic = { "student_names" : str(data[1]), "student_department" : str(data[7])}
    list1.append(dic)

也许您应该review how lists work in python

您也可以将其压缩为一行，例如：

list1 = []
for data in result:
    list1.append({"student_names": str(data[1]), "student_department": str(data[7])})

Answer 2

您可以：

list1 = []
for data in result:
    dic = { "student_names" : str(data[1]),
            "student_department" : str(data[7])}
    list1.append(dic)

但是您也许应该考虑使用pandas DataFrame来做到这一点：

import pandas as pd
values = []
for data in result:
    values.append([str(data[1]), str(data[7])])
df = pd.DataFrame(values, columns=["student_names", "student_department"])

如何将多个词典转换为单个列表？

2 个答案: