Question

我有一个列表，其中包含像这样的json对象

a =[{"User": "Ram","Product": "Soap","Price": "25"},
    {"User": "Ramesh","Product": "Shampoo","Price": "5"},
    {"User": "Ramesh","Product": "powder","Price": "35"}]

现在，我想将此单个列表拆分为多个列表，如此

a2 = [
      [{"User": "Ram","Product": "Soap","Price": "25"}],
      [{"User": "Ramesh","Product": "Shampoo","Price": "5"}],
      [{"User": "Ramesh","Product": "powder","Price": "35"}]
     ]

任何人都可以告诉我如何实现这个解决方案，我是python的新手。

Answer 1

这样做，

[[i] for i in a]

Answer 2

将每个项目用括号括起来：

a2 = [[item] for item in a]

Answer 3

另一种解决方案，

new_a = map(lambda x: [x], a)

输出

[[{'Product': 'Soap', 'User': 'Ram', 'Price': '25'}], [{'Product': 'Shampoo', 'User': 'Ramesh', 'Price': '5'}], [{'Product': 'powder', 'User': 'Ramesh', 'Price': '35'}]]

Answer 4

如果没有Avinash答案中的列表理解，这是一种更冗长的方式。

def list_split(a):
    sp = []
    for element in a:
        sp.append([element])
    return sp

a2 = list_split(a)

将单个列表拆分为python中的多个列表

4 个答案: