如何删除基于0的特定行的列？

def delete_zero_columns(matrix):
    num_rows = len(matrix)
    num_cols = len(matrix[0])
    zero_columns = []

    # 找到所有全为0的列
    for col in range(num_cols):
        is_zero_column = True
        for row in range(num_rows):
            if matrix[row][col] != 0:
                is_zero_column = False
                break
        if is_zero_column:
            zero_columns.append(col)

    # 删除所有全为0的列
    for row in range(num_rows):
        for col in sorted(zero_columns, reverse=True):
            del matrix[row][col]

    return matrix