在pandas中将字典转换为dataframe列

Question

我有一本这样的嵌套字典

  d = {1 : {'we': 26, 'is': 112},
       2 : {'tp': 26, 'fp': 91},
       3 : {'pp': 23, 'kj': 74}}

我想把它改为dataframe列，这样外部dict键变成行，它的元素充当列的元素。

期望输出：

  rows           col1      
  1      'we': 26, 'is': 112
  2      'tp': 26, 'fp': 91
  3      'pp': 23, 'kj': 74

Answer 1

如果这就是你字典里的东西，它不一定会保留内部dict的键顺序

import pandas as pd
d = {1 : {'we': 26, 'is': 112},
     2 : {'tp': 26, 'fp': 91},
     3 : {'pp': 23, 'kj': 74}}
# Replace the inner dicts with their string representations
for i in d:
    d[i] = str(d[i])
# Convert to dataframe
df = pd.DataFrame.from_dict(d, orient='index').reset_index()
# Clean up column names
df.rename(columns={'index': 'row', 0: 'col1'}, inplace=True)