实验四练习

实验任务6：综合应用(1) —— 分数文件处理

 

with open('data6_1.txt','r',encoding='utf-8') as f:
    ls=sorted([line.replace('\n','').split('\t') for line in f.readlines()],key=lambda k:int(k[2]),reverse=True)
    with open('data6_2.txt','w+',encoding='utf-8') as nf:
        for i in ls: nf.write(' '.join(i)+'\n')
with open("data6_2.txt","r",encoding="utf-8") as h:
    print(h.read())

 

实验任务7: 综合应用(2) —— 随机抽点 

任务7-1:

import random

def get_lucky_boy(lis:list,trys:int):
    result=[]
    for i in range(trys):
        boy=random.choice(lis)
        lis.remove(boy)
        result.append(boy)
    t=[]
    for i in result:
        t.append(' '.join(i)+'\n')
    return ''.join(t)
ls=[]
with open('data7.txt','r',encoding='utf-8') as f:
   for line in f.readlines():
       m=line.strip().split()
       ls.append(m)
n=int(input('yikutu desuka?'))
boys=get_lucky_boy(lis=ls,trys=n)
print(boys)
with open('lucky.txt','w',encoding='utf-8') as nf:
        nf.write(boys)

 

任务7-2:

import datetime
import random

def get_lucky_boy(lis:list,trys:int):
    result=[]
    for i in range(trys):
        boy=random.choice(lis)
        lis.remove(boy)
        result.append(boy)
    return result

def ls2str(ls:list):
    t=[]
    for i in ls:
        t.append(' '.join(i)+'\n')
    return ''.join(t)


with open('data7.txt','r',encoding='utf-8') as f:
    ls=[line.replace('\n','').split('\t') for line in f.readlines()]
    n=int(input('How many boyz would U like to get'))
    boys=get_lucky_boy(lis=ls,trys=n)
    result=ls2str(boys)
    print(result)
    filename=datetime.datetime.now().strftime('%Y%m%d')
    with open(filename,'w',encoding='utf-8') as nf:
        nf.write(result)