PTA每日一题-Python-列表去重

输入一个列表，去掉列表中重复的数字，按原来次序输出！

输入格式:

在一行中输入列表

输出格式:

在一行中输出不重复列表元素

实现

#!/usr/bin/env python3
#-*- coding:utf-8 -*-
from functools import reduce
def main():
    #There is superfluous operation,but I just want to practice syntax.
    #print(reduce(lambda x,y:x+' '+y,map(lambda x:str(x),set(eval(input())))))
    i=0
    ls=eval(input())
    while i<len(ls):
        #print(ls[i],end=' ')
        while True:
            try:
                #You must pay attention to focus the difference between 'list.remove()' and 'list.__delitem__()'!!!
                ls.__delitem__(ls.index(ls[i],i+1))
            except Exception as e:
                break;
            finally:
                pass
        i+=1
    print(reduce(lambda x,y:x+' '+y,map(lambda x:str(x),ls)))

#---
main()

输出

[4,7,5,6,8,6,9,5] 
4 7 5 6 8 9