实验5

with open('data6.csv','r',encoding='gbk') as f:
    data1 = f.read().split('\n')
del data1[0]
print('原始数据:')
print(data1)

for i in range(len(data1)):
    data1[i] = float(data1[i])
data2 = []
for i in range(len(data1)):
    data2.append(int(data1[i]+0.5))
print('四舍五入后数据:')
print(data2)

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

with open('data7.csv','r',encoding = 'gbk') as f:
    data = f.readlines()
data_t = ['学号','姓名','专业','分数']
data1 = [i.strip('\n').split(',') for i in data]
data1.remove(data1[0])

data2=sorted(data1,key=lambda x:(x[2],-int(x[3])))
with open('data7_processed.csv','w',encoding = 'gbk') as f:
    f.write(','.join(data_t) + '\n')
    for item in data2:
        f.write(','.join(item) + '\n')

print(f'{"学号":10s}{"姓名":10s}{"专业":10s}{"分数":10s}')
for a,b,c,d in data2:
    print('{:<10s}{:<10s}{:<10s}{:<10}'.format(a,b,c,d))

with open('hamlet.txt','r') as f:
    data = f.read()
print('hamlet.txt粗略统计:')
data1 = data.splitlines()
print(f'行数:{len(data1)}')
print(f'单词数:{len(data.split())}')
print(f'字符数:{len(data)}')
k = data.count(' ')
print(f'空格数:{k}')

data2=[]
for i in range(len(data1)):
    data2.append(f'{i+1} '+ data1[i] + '\n')
with open('hamlet_with_line_number.txt','w') as f:
    f.writelines(data2)

import datetime


def is_valid(x):
    if len(x) == 18 and x[:-1].isdigit() and (x[-1].isdigit() or x[-1] == 'X'):
        return True
    else:
        return False


with open('data9_id.txt', 'r', encoding='utf-8') as f:
    data0 = f.readlines()
    title = data0.pop(0)

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

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

t = datetime.datetime.now()
y = t.strftime('%Y%m%d')
for i in data1:
    age = str(int(y)-int(i[1][6:14]))
    i.append(age[:2])
    i[1] = i[1][6:10] + '-' + i[1][10:12] + '-' + i[1][12:14]
data2 = sorted(data1, key=lambda x: -int(x[2]))

print('姓名, 出生日期, 年龄')
for i in data2:
    print(', '.join(i))

with open('data10_stu.txt','r',encoding='utf-8') as f:
    data = f.readlines()
print('{:*^40}'.format('抽点开始'))
n = int(input('输入随机抽点人数:'))
import random
sum1 = 0
x = []
x2 = ''
counts = 0
while counts < n:
    new = random.randint(0, len(data) - 1)
    if new in x:
        new = random.randint(0, len(data) - 1)
    else:
        counts +=1
        x.append(new)
for i in range(n):
    print(data[x[i]])
    x2 += data[x[i]]
    sum1 += n
with open('20230602.txt','w',encoding='utf-8') as f:
    f.writelines(x2)