实验5 文件应用编程

实验任务6

task_6.py

程序源码：

with open ('data6.csv','r',encoding='gbk') as f:
    data=f.readlines()

data.remove('原始数据\n')
data1=[]
for i in data:
    if i[-1]=='\n':
        i=i[:-1]
    data1.append(float(i))
print('原始数据：')
print(data1)

data2=[round(i+0.2) for i in data1]
print('四舍五入后数据：')
print(data2)

with open('data6_processed.csv','w',encoding='gbk') as f:
    f.write('原始数据,四舍五入后数据\n')
    for i in range(len(data2)):
        f.write(str(data1[i])+','+str(data2[i])+'\n')

运行测试截图：

 实验任务7

task_7.py

程序源码：

with open('data7.csv','r',encoding='gbk') as f:
    data=f.readlines()

data1=[i.strip('\n').split(',') for i in data]
data1.remove(data1[0])

data_acting=[]
data_music=[]
for i in data1:
    if i[2]=='Acting':
        data_acting.append(i)
    elif i[2]=='Music':
        data_music.append(i)

data2=sorted(data_acting,key=lambda x:x[3],reverse=True)
data3=sorted(data_music,key=lambda x:x[3],reverse=True)
data4=data2+data3

with open('data7_processed.csv','w',encoding='gbk') as f:
    f.write('学号,姓名,专业,分数\n')
    for i in range(len(data4)):
        f.write(','.join(data4[i])+'\n')

运行测试截图：

 实验任务8

task_8.py

程序源码：

with open('hamlet.txt','r',encoding='gbk') as f:
    data=f.read()
    lines=len(data.splitlines())
    words=len(data.split())
    strings=len(data)
    blanks=data.count(' ')

print('hamlet.txt粗略统计：')
print(f'行数：{lines}')
print(f'单词数：{words}')
print(f'字符数：{strings}')
print(f'空格数：{blanks}')

with open('hamlet.txt','r',encoding='gbk') as f:
    text=f.readlines()

for i in range(len(text)):
    text[i]=str(i+1)+' '+text[i]

with open('hamlet_with_line_number.txt','w',encoding='gbk')as f:
    f.writelines(text)

运行测试截图：

 实验任务9

task_9.py

程序源码：

def is_valid(id):
    if len(list(id)) != 18:
        return False
    elif str(id).isnumeric() or (list(id)[-1]=='X' and str(id)[:-1].isnumeric()):
        return True
    else:
        return False


with open('data9_id.txt','r',encoding='UTF-8') as f:
     data=f.readlines()

data.remove(data[0])
data0=[i.strip('\n').split(',') for i in data]

data1=[]
for i in data0:
     if is_valid(i[1])==True:
        i[1]=i[1][6:14]
        data1.append(i)

import datetime
t=datetime.datetime.now()
y=t.strftime('%Y%m%d')
for i in data1:
    i.append(str(int(y)-int(i[1][0:8])))
data2=sorted(data1,key=lambda x:x[2],reverse=True)

print('姓名, 出生日期, 年龄')
for i in data2:
    i[1]=i[1][0:4]+'-'+i[1][4:6]+'-'+i[1][6:8]
    i[2]=i[2][0:2]
    print(', '.join(i))

运行测试截图：

 实验任务10

task_10_1.py

程序源码：

import random
import datetime

with open('data10_stu.txt','r',encoding='UTF-8')as f:
    data=f.readlines()
data1=[i.strip('\n').split('\t') for i in data]

n=int(input('输入随机抽点人数：'))
data2=random.sample(data1,n)
for i in data2:
    print(' '.join(i))

t=datetime.datetime.now()
d=t.strftime('%Y%m%d')

with open('{}.txt'.format(d),'w',encoding='UTF-8')as f:
    for i in data2:
        i[0]+='\t'
        i[1]+='\t'
        i[2]+='\n'
        f.writelines(i)

运行测试截图：

 

 task_10_2.py

程序源码：

import random
import datetime

print('*'*20,'抽点开始','*'*20)
with open('data10_stu.txt','r',encoding='UTF-8')as f:
    data=f.readlines()
data1=[i.strip('\n').split('\t') for i in data]

t=datetime.datetime.now()
d=t.strftime('%Y%m%d')

n=int(input('输入随机抽点人数：'))
x=0
while n!=0:
    data2=random.sample(data1,n)
    for i in data2:
        print(' '.join(i))
        data1.remove(i)
    if x==1:
        with open('{}.txt'.format(d),'w',encoding='UTF-8') as f:
            for i in data2:
                i[0] += '\t'
                i[1] += '\t'
                i[2] += '\n'
                f.writelines(i)
    else:
        with open('{}.txt'.format(d), 'a', encoding='UTF-8') as f:
            for i in data2:
                i[0] += '\t'
                i[1] += '\t'
                i[2] += '\n'
                f.writelines(i)

    n = int(input('输入随机抽点人数：'))
print('*'*20,'抽点结束','*'*20)

运行测试截图：