实验5

实验任务3
with open('data3.txt','r',encoding='utf-8')as f:
    data=f.read()
with open('data3.txt','r',encoding='utf-8')as f:
    data1=f.readlines()
data0=[line.split() for line in data1[1:]]
data3=[float(line[0])for line in data0]
print('原始数据：')
print(data3)
def myround(x):
    if(x-int(x)<0.5):
        return int(x)
    else:
        return int(x)+1
data2=[]
for i in range(len(data3)):
    data2.append(myround(float(data3[i])))
print('四舍五入后数据：')
print(data2)
with open('data3_processed.txt','w',encoding='utf-8')as f:
    f.write('原始数据'+'\t'*2+'四舍五入后数据'+'\n')
    for i in range(len(data2)):
        f.write(str(data3[i])+'\t'*2+str(data2[i])+'\n')

 

实验任务4
with open('data4.txt','r',encoding='utf-8')as f:
    data=f.readlines()
data0=[line.split()for line in data[1:]]
for i in range(len(data0)):
    data0[i]=tuple(data0[i])
data1=sorted(data0,key=lambda x:(x[2],-int(x[3])))
data2=[]
for i in range(len(data1)):
    data2.append(data1[i][0]+'\t'+data1[i][1]+'\t'+data1[i][2]+'\t'+data1[i][3]+'\n')
print('学号'+'\t'+'姓名'+'\t'+'专业'+'\t'+'分数')
print(''.join(data2))
with open('data4_processed.txt','w',encoding='utf-8')as f:
    f.write('学号'+'\t'+'姓名'+'\t'+'专业'+'\t'+'分数'+'\n')
    f.write(''.join(data2))

 

实验任务5
with open('data5.txt','r',encoding='utf-8')as f:
    text=f.read()
l=text.splitlines()
print('行数：'+str(len(l)))
print('单词数：'+str(len(text.split())))
print('空格数：'+str(text.count(' ')))
print('字符数：'+str(len(text)))  
with open('data5_with_line.txt','w',encoding='utf-8')as f:
    for i in range(len(l)):
        f.write(str(i+1)+'  '+l[i]+'\n')

此次实验中，我进一步掌握了文件的内容，特别是第一次实践了lambda的用法，安装了everything。但是这也暴露出一些问题，比如在一些实验任务中我不能立即想到课上讲的相关知识点，下次我要多加注意。