多行转换为可变列数

一种将多行转换为可变列数的解决方法是使用Python中的字符串处理方法和循环结构。下面是一个示例代码：

def convert_to_variable_columns(text, num_columns):
    # 将文本按行拆分成列表
    lines = text.split("\n")
    
    # 计算每一列的行数
    num_lines_per_column = len(lines) // num_columns
    
    # 如果有余数，则将其分配给最后一列
    remainder = len(lines) % num_columns
    
    # 初始化结果列表
    columns = []
    
    # 遍历每一列
    for i in range(num_columns):
        # 计算当前列的行数
        if i < remainder:
            num_lines = num_lines_per_column + 1
        else:
            num_lines = num_lines_per_column
        
        # 将当前列的行拼接成字符串
        column = "\n".join(lines[i*num_lines:(i+1)*num_lines])
        
        # 将当前列添加到结果列表
        columns.append(column)
    
    return columns

使用示例：

text = """This is line 1.
This is line 2.
This is line 3.
This is line 4.
This is line 5.
This is line 6.
This is line 7.
This is line 8.
This is line 9."""

num_columns = 3

result = convert_to_variable_columns(text, num_columns)
for column in result:
    print(column)
    print("--------------------")

输出结果：

This is line 1.
This is line 2.
This is line 3.
--------------------
This is line 4.
This is line 5.
This is line 6.
--------------------
This is line 7.
This is line 8.
This is line 9.
--------------------