a={
'001':{'name':'张三','age':18,'address':'北京'},
'002':{'name':'张二','age':28,'address':'上海'},
'003':{'name':'张大','age':38,'address':'北京'},
'004':{'name':'张四','age':28,'address':'上海'},
'005':{'name':'张六','age':39,'address':'北京'}
}
class StudentAdmin():
@staticmethod
def write():
f=open('a.txt','w')
f.write(str(a))
f.close()
@staticmethod
def read():
f=open('a.txt','r')
c=f.read()
f.close()
return eval(c)
a = StudentAdmin.write()
a=StudentAdmin.read()
while True:
print('操作编号:','1:添加','2:删除','3:修改','4,:查找','5:退出程序')
bh=int(input('请选择要进行的操作:'))
if bh==1:
xh=input('请输入要添加的学号:')
if xh in a.keys():
print('学号重复,添加失败')
continue
else:
zd={}
zd['name']=input('请输入要添加的姓名:')
zd['age']=int(input('请输入要添加的年龄:'))
zd['address']=input('请输入要添加的地址:')
a[xh]=zd
print(a)
elif bh==2:
xh=input('请输入要删除的学号:')
if xh not in a.keys():
print('查无此人,删除失败')
continue
else:
print('要删除的人是:',a[xh])
del a[xh]
print(a)
elif bh==3:
xh=input('请输入要修改的学号:')
if xh not in a.keys():
print('查无此人,修改失败')
continue
else:
a[xh]['name']=input('请输入修改后的姓名:')
a[xh]['age']=int(input('请输入修改后的年龄:'))
a[xh]['address']=input('请输入修改后的地址:')
print(a)
elif bh==4:
xh=input('请输入要查找的学号:')
if xh not in a:
print('查无此人,查找失败')
continue
else:
print(a[xh])
elif bh==5:
a = StudentAdmin.write()
break
Python-文件读写字典的增删改查
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转载自blog.csdn.net/Liang_Ren_/article/details/88068535
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