python 进行数据列表按比例随机拆分 random split list

import random


# 数据集拆分函数: 将列表 full_list按比例ratio（随机）划分为3个子列表sublist_1、sublist_2、sublist_3

def data_split(full_list, ratio, shuffle=False):
    n_total = len(full_list)
    offset0 = int(n_total * ratio[0])
    offset1 = int(n_total * ratio[1])
    offset2 = int(n_total * ratio[2])

    if n_total == 0: # 列表为空的情况
        return []

    if offset0 + offset1 + offset2 > n_total: # 错误切分条件
        print("错误切分比例:因为:", ratio[0], "+", ratio[1], "+", ratio[2], "=", ratio[0] + ratio[1] + ratio[2], ">1")
        return 0

    if offset0 + offset1 + offset2 <= n_total:# 切分
        random.shuffle(full_list)
    sublist_1 = full_list[:offset0]
    sublist_2 = full_list[offset0:offset0 + offset1]
    sublist_3 = full_list[offset0 + offset1:]
    return sublist_1, sublist_2, sublist_3


if __name__ == "__main__":
    number = int(input("请输入要生成的列表内的随机数个数："))
    data = list(range(number))
    ratio = []
    ratio1, ratio2, ratio3 = eval(input("请输入切分比列，用逗号隔开："))
    ratio.append(ratio1)
    ratio.append(ratio2)
    ratio.append(ratio3)

    # print(ratio)
    sub_data1, sub_data2, sub_data3 = data_split(data, ratio, shuffle=True)
    print(sub_data1, ",", sub_data2, ",", sub_data3) # 打印结果

 

正确输入切分比例 结果：

 

 

 

错误输入切分比例 结果：