获取Pandas Dataframe中包含非零列的前11行

import pandas as pd

# 创建一个示例DataFrame
data = {'A': [0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 0],
        'B': [0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0],
        'C': [4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
        'D': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]}

df = pd.DataFrame(data)

# 获取非零列的前11行
non_zero_cols = df.loc[:, (df != 0).any(axis=0)].head(11)

print(non_zero_cols)