在Python中更改Pandas字典的输出格式？

import pandas as pd

# 创建一个示例DataFrame
data = {'col1': [1, 2, 3], 'col2': [4, 5, 6]}
df = pd.DataFrame(data)

# 将DataFrame转换为字典，输出格式为'list'
dict_list = df.to_dict(orient='list')
print(dict_list)

# 将DataFrame转换为字典，输出格式为'series'
dict_series = df.to_dict(orient='series')
print(dict_series)

# 将DataFrame转换为字典，输出格式为'split'
dict_split = df.to_dict(orient='split')
print(dict_split)

# 将DataFrame转换为字典，输出格式为'records'
dict_records = df.to_dict(orient='records')
print(dict_records)