name_list = ["刘备", "张飞", "刘备", "诸葛亮"]
temp_list = []

for name in name_list:
    # 判断name是否在temp_list中
    # 判断name是否是temp_list的成员
    # 如果是成员，不保存。否则才保存
    if name not in temp_list:
        temp_list.append(name)

print(temp_list)

方式一，利用枚举

name_list = ["刘备", "张飞", "刘备", "诸葛亮"]
temp_list = []

for i,name in enumerate(name_list):
    print(name, name_list.index(name),i)
    if name_list.index(name) == i:
        temp_list.append(name)
        
print(temp_list)

方式二，无枚举，自己造下标

name_list = ["刘备", "张飞", "刘备", "诸葛亮"]
# name_list.index("刘备")
temp_list = []
num_len = len(name_list)  # 4

for i in range(num_len):  # for i in range(0,4)
    # print(i)
    # 列表[下标]
    name = name_list[i]
    print(name,i)
    firse_show_index = name_list.index(name) # 下标 = 列表.index（成员）
    if i == firse_show_index:
        temp_list.append(name)

print(temp_list)

name_list = ["刘备", "张飞", "刘备", "诸葛亮"]
s = list(set(name_list))
print(s, type(s))

set数据类型

特点是，无重复

集合对象 = set(列表或元组)

定义一个集合