使用第二个 for 循环时不显示值 - Python

Question

我试图在数据中进行随机选择，但在使用 for-loop 将所有数据嵌套到数组中时卡住了。

数据

data = [
    {"Animal1": "Dog", "Animal2": "Cat", "Animal3": "Snake"},
    {"Animal1": "Mouse", "Animal2": "Ant", "Animal3": "Chicken"},
    {"Animal1": "Fish", "Animal2": "Elephant", "Animal3": "Fox"},
    {"Animal1": "rabbit", "Animal2": "sheep", "Animal3": "wolf"}
]

我的代码：

new_data = []

for rows in data:
    for row in rows:
        new_data.append(row)

print(new_data)

输出

['Animal1', 'Animal2', 'Animal3', 'Animal1', 'Animal2', 'Animal3', 'Animal1', 'Animal2', 'Animal3', 'Animal1', 'Animal2', 'Animal3']

预期输出

{
    "Animal1": "Dog", "Animal2": "Cat", "Animal3": "Snake",
    "Animal1": "Mouse", "Animal2": "Ant", "Animal3": "Chicken",
    "Animal1": "Fish", "Animal2": "Elephant", "Animal3": "Fox",
    "Animal1": "rabbit", "Animal2": "sheep", "Animal3": "wolf"
}

Answer 1

我想你正在寻找类似的东西：

from collections import defaultdict

results = defaultdict(list)

for rows in data:
    for key, value in rows.items():
        results[key].append(value)

使用第二个 for 循环时不显示值 - Python

values are not shown up when using the second for loop - Python

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for-loop

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