核心是应用 pd.Series， 具体操作如下：

import pandas as pd

data = {'years': [2025],
        'week': [{f"week_{i}": i for i in range(3)}]
        }
df = pd.DataFrame(data)
print(df)

df = pd.concat([df, df['week'].apply(pd.Series)], axis=1).drop('week', axis=1)
    print(df)