1.

a

f=open('11.txt','r',encoding='utf-8')

a=f.read()

print(a)

f.flush()

f.close()

b.

f=open('11.txt','a',encoding='utf-8')

f.write('信不信由你')

f.flush()

f.close()

c.

f=open('11.txt','r+',encoding='utf-8')

a=f.read()

print(a)

f.write('信不信由你')

f.flush()

f.close()

d.

f=open('11.txt','w',encoding='utf-8')

f.write('每天坚持一点')

f.flush()

f.close()

e.

f1=open('11.txt','r',encoding='utf-8')

f2=open('11.1','w',encoding='utf-8')

a=f1.readline()

b=f1.readline()

c=f1.readline()

d=f1.readline()

f2.write(a)

f2.write(b)

f2.write(c)

f2.write('你们就信了吧。')

f2.write(d)

2.

a,b

with open('t1.txt','r+',encoding='utf-8') as f1:

    a=f1.read()

    f1.write('a')

for line in a:

    print(line)

c.

with open('t1.txt','r',encoding='utf-8') as f1:

    a=f1.readlines()

for line in a:

    print(line)

d.

with open('t1.txt','r',encoding='utf-8') as f1:

    a=f1.read(4)

print(a)

e.

with open('t1.txt','r',encoding='utf-8') as f1:

    a=f1.readline()

    a.replace(' ','')

    a.replace('/n','')

print(a)

f.

with open('t1.txt','r',encoding='utf-8') as f1:

    a=f1.readline()

    b=f1.readline()

    c=f1.readline()

print(c)

g.

with open('t1.txt','a+',encoding='utf-8') as f1:

    f1.write('老男孩教育')

    f1.seek(0)

    a=f1.read()

    print(a)

h.

with open('t1.txt','r',encoding='utf-8') as f1:

    a = f1.read()

print(a)

3.

b=[]

with open('a.txt','r',encoding='utf-8') as f1:

    df=f1.readlines()

for i in  range(0,len(df)):

    a = {}

    a['name']=df[i].replace('\n','').split(' ')[0]

    a['price'] = df[i].replace('\n','').split(' ')[1]

    a['amount'] = df[i].replace('\n','').split(' ')[2]

    b.append(a)

print(b)

4.

f1= open('4.txt','r',encoding='utf-8')

f2=open('4.1.txt','w+',encoding='utf-8')

a=f1.read()

c=a.replace('alex','SB')

f2.write(c)

5.

lst=[]

f1= open('a.txt','r',encoding='utf-8')

for i in f1:

    lst1=i.split()

    print(lst1)

    dic={}

    dic[lst1[0].split(':')[0]]=lst1[0].split(':')[1]

    dic[lst1[1].split(':')[0]]=lst1[1].split(':')[1]

    dic[lst1[2].split(':')[0]] =lst1[2].split(':')[1]

    dic[lst1[3].split(':')[0]] = lst1[3].split(':')[1]

    lst.append(dic)

print(lst)

6.

lst=[]

f1= open('a.txt','r',encoding='utf-8')

a=f1.readline().split()

print(a)

for i in f1:

    dic={}

    print(i)

    dic[a[0]]=i.split()[0]

    dic[a[1]]=i.split()[1]

    dic[a[2]]=i.split()[2]

    lst.append(dic)

print(lst)