python - 将嵌套的字典列表转换为 pandas DataFrame

Question

谁能建议我将字典列表转换为 pandas 数据框的有效方法？

Input = [[{'name':'tom','roll_no':1234,'gender':'male'},
          {'name':'sam','roll_no':1212,'gender':'male'}],
          [{'name':'kavi','roll_no':1235,'gender':'female'},
          {'name':'maha','roll_no':1211,'gender':'female'}]]

提供的示例输入中的字典键相同，预期输出为，

Output =      name       roll_no       gender
          0   tom        1234          male
          1   sam        1212          male
          2   kavi       1235          female
          3   maha       1211          female

Answer 1

您需要使用 itertools.chain 来展平您的输入，然后您可以调用 pd.DataFrame 构造函数。

from itertools import chain
pd.DataFrame(list(chain.from_iterable(data)))

   gender  name  roll_no
0    male   tom     1234
1    male   sam     1212
2  female  kavi     1235
3  female  maha     1211