实验5

with open('data1_2.txt','r',encoding='utf-8')as f:
    n=0
    for line in f :
        if line.strip()=='':
            continue
        n+=1
print(f'共{n}行')

 

 

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('data1_2.txt', 'r', encoding = 'utf-8') as f:
    n = 0
    for line in f:
        if line.strip() == '':
            continue
        n += 1
print(f'共{n}行

 

 

with open('data1_2.txt', 'r', encoding = 'utf-8') as f:
    n = 0
    for line in f:
        if line.isspace():
            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:
    Z=[]
    Y=[]
    x=[]
    for i in f:
        x.append(i.strip('\n'))
    newx=x[1:11]
    for i in newx:
        y=float(i)
        Y.append(y)
        if y-int(y) >= 0.5:
            y=int(y)+1
        else:
            y=int(y)
        Z.append(y)
    print(f'原始数据\n{Y}')
    print(f'四舍五入后的数据\n{Z}')

with open('data3_processed.txt','w',encoding='utf-8') as f:
    write1=['原始数据']+Y
    write2=['四舍五入后的数据']+Z
    for i in range (len(Y)):
        f.write(f'{write1[i]}\t{write2[i]}\n')

 

 

 

 

with open('data4.txt', 'r', encoding = 'utf-8') as f:
    Y=[]
    l=[]
    t=[]
    e=[]
    data=f.readlines()
    for i in data:
        i=i.split()
        Y.append(i)
    Y.remove(Y[0])
    newlist1=sorted(Y,key=(lambda x : x[2]))
    for i in range (0,8):
        l.append(newlist1[i])
    l1=sorted(l,key=(lambda x : x[3]),reverse=True)
    for i in range (8,10):
        t.append(newlist1[i])
    l2=sorted(t,key=(lambda x : x[3]),reverse=True)
    X=l1+l2
    for i in X:
        i1='\t'.join(i)
        i1=i1+'\n'
        e.append(i1)
    e.insert(0,'学号\t姓名\t专业\t分数\n')
    for i in e:
        print(i)
with open('data4_processed.txt','w',encoding='utf-8') as f:
    for i in e:
        f.write(i)

 

 

 

 

with open('data5.txt', 'r+', encoding = 'utf-8') as f:
    data=f.read()
    print('行数',len(data.splitlines()))
    print('单词数',len(data.split()))
    s=0
    for i in data:
        if i.isspace():
            s=s+1
    print('空格数',s)
    print('字符数',len(data))


with open('data5_with_line.txt', 'w+', encoding = 'utf-8') as f:
    for i in range(len(data.splitlines())):
        f.write(str(i+1)+' '+str(data.splitlines()[i])+'\n')