如何在pandas中选择不连续的列

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9], 'D': [10, 11, 12]})

selected_columns = ['A', 'C']  # 选择A和C列
result = df[selected_columns]
print(result)

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9], 'D': [10, 11, 12]})

result = df.loc[:, 'A':'C':2]  # 选择A、C列，步长为2
print(result)