实验6

实验任务3
def is_valid(s):
    if(len(s)!=18):
       return False
    for i in range(len(s)):
        if((s[i]<'0' or s[i]>'9') and s[i]!='X'):
            return False
    else:
        return True
li=[]
with open('data3_id.txt','r',encoding='utf-8')as f:
    data=f.readlines()
for line in data[1:]:
    if(is_valid(line[3:].strip())==True):
        li.append(line)
list=[]
for i in range(len(li)):
    list.append(li[i][0:3]+li[i][9:13]+'-'+li[i][13:15]+'-'+li[i][15:17])
for i in range(len(list)):
    list[i]=list[i].split(',')
    list[i]=tuple(list[i])
list1=sorted(list,key=lambda x:(x[1],x[0]))
for i in range(len(list1)):
    print(list1[i][0]+','+list1[i][1])

 

实验任务5
5.1
with open('data5.txt','r',encoding='utf-8')as f:
    list=f.readlines()
list=[line.split()for line in list]
import random
n=eval(input('输入随机抽点人数：'))
Is=random.sample(list,n)
for i in range(len(Is)):
    print(Is[i][0]+'\t'+Is[i][1]+'\t'+Is[i][2])
import datetime
t=datetime.datetime.now()
filename=t.strftime('%Y%m%d')+'.txt'
with open(filename,'w',encoding='utf-8')as f:
    for i in range(len(Is)):
        f.write(Is[i][0]+'\t'+Is[i][1]+'\t'+Is[i][2]+'\n')

 

 

5.2
with open('data5.txt','r',encoding='utf-8')as f:
    list=f.readlines()
list=[line.split()for line in list]
import random
n=1
print('{:=^40}'.format('抽点开始'))
li=[]
while n!=0:
    n=eval(input('输入随机抽点人数：'))
    Is=random.sample(list,n)
    for i in range(len(Is)):
        print(Is[i][0]+'\t'+Is[i][1]+'\t'+Is[i][2])
        list.remove(Is[i])
        li.append(Is[i])
import datetime
t=datetime.datetime.now()
filename=t.strftime('%Y%m%d')+'.txt'
with open(filename,'w',encoding='utf-8')as f:
    for i in range(len(li)):
        f.write(li[i][0]+'\t'+li[i][1]+'\t'+li[i][2]+'\n')
print('{:=^40}'.format('抽点结束'))

实验总结：此次实验中我进一步巩固了lambda的用法，复习了填充短线等操作，学习了随机获取数据项和得到时间等方法。