如何在Python中基于列值的多个类别创建多个列

Question

import pandas as pd df = pd.DataFrame( ['Expenses','1. Interest Expense','1.1 On Deposit Liabilities','1.1.1 Saving Account','1.1.2 Fixed Account','1.1.2.1 Up to 3 months Fixed Account','1.1.2.2 3 to 6 months Fixed Account','1.1.2.3 6 months to 1 year Fixed Account','1.1.2.4 Above 1 year Fixed Account','1.1.3 Call Deposit','1.1.4 Certificate of Deposit','1.2 On Borrowing','2. Commission Expense','3. Staff Expense','4. Office Operating Expenses','5. Foreign Exchange Loss'] , columns=['level1'])

我的愿望输出是

Answer 1

如果您的输入在string list ，则可以使用

[x.split()[0] for x in columns]