实验5

 

with open('data1_1.txt', 'r', encoding='utf-8') as f:
    n=0
    for line in f:  # 逐行遍历处理
        if line.strip('\n') =='':
            continue
        n+=1
print(f'共{n}行')

 

 

 

with open('data2.txt','r',encoding='utf-8') as f:
    data=f.read().split('\n')
unique_line=[]
for line in data:
        if data.count(line)==1:
            unique_line.append(line)
print(f'共{len(unique_line)}独特行')
for i in unique_line:
    print(i)

 

 

 

with open('data3.txt','r',encoding='utf-8')as f:
    data=f.read().strip().split('\n')
    list=[]
    a=1
    for i in data:
        if a==1:
            a=a+1
            list.append('四舍五入后数据')
            continue
        else:
            i=eval(i)
            if i-int(i)>=0.5:
                i=int(i)+1
                list.append(i)
            else:
                i=int(i)
                list.append(i)
f.close()
list1=[]
for i in range(len(list)):
    if i==0:
        s=data[i]='\t'+str(list[i])+'\n'
    else:
        s=data[i]='\t'+'\t'+str(list[i])+'\n'
    list1.append(s)
with open ('data3_processed.txt','w',encoding='utf-8')as n:
    n.writelines(list1)
f.close()
print(data[0])
print(data[1:])
print(list[0])
print(list[1:])

 

 

 

with open('data4.txt','r',encoding='utf-8') as f:
    yuan=f.read().split('\n')
    data=['']*(len(yuan)-1)
    res=['']*len(yuan)
    for i in range(0,len(yuan)):
        yuan[i]=list(yuan[i].split('\t'))
        if i>0:
            yuan[i][3]=int(yuan[i][3])
            data[i-1]=yuan[i]
    data.sort(key=lambda s:(s[2],-s[3]))
    for j in range(0, len(yuan[0])):
        res[0] += str(yuan[0][j]) + '\t'
    res[0] += '\n'
    for i in range(0,len(data)):
        for j in range(0, len(data[i])):
            res[i+1] += str(data[i][j]) + '\t'
        res[i+1] += '\n'
with open('data4out.txt','a',encoding='utf-8') as f:
    f.writelines(res)

 

 

data=[]
s1=0
s2=0
s3=0
with open('data5.txt', 'r',encoding = 'utf-8') as f:
    data=f.readlines()
for i in range(len(data)):
   s1+=len(data[i].split(' '))
   s2+=len(data[i])
   s3+=data[i].count(' ')
print('行数：',len(data));print('单词数：',s1)
print('字符数:',s2);print('空格数',s3)
for i in range(len(data)):
    data[i]=str(i+1)+' '+data[i]
with open('data5out.txt', 'w',encoding = 'utf-8') as f:
     f.writelines(data)