实验五

实验任务1

class Account:
    def __init__(self,name,account_number,initial_amount):
        self._name = name
        self._card_no = account_number
        self._balance = initial_amount

    def deposit(self,amount):
        self._balance += amount

    def withdraw(self,amount):
        self._balance -= amount

    def info(self):
        print(f'{self._name},{self._card_no},{self._balance}')

    def get_balance(self):
        return self._balance

a1 = Account('Bob','5002311',20000)
a2 = Account('Joe','5006692',20000)

a1.deposit(5000)
a1.withdraw(4000)

a2.withdraw(10000)
a2.withdraw(5000)

a1.info()
a2.info()

实验任务2

class Account:
    def __init__(self,name,account_number,initial_amount):
        self._name = name
        self._card_no = account_number
        self._balance = initial_amount

    def deposit(self,amount):
        self._balance += amount

    def withdraw(self,amount):
        self._balance -= amount

    def info(self):
        print(f'{self._name},{self._card_no},{self._balance}')

    def get_balance(self):
        return self._balance

def main():
    a1 = Account('Bob','5002311',20000)
    a2 = Account('Joe','5006692',20000)
    a1.deposit(5000)
    a1.withdraw(4000)

    a2.withdraw(10000)
    a2.withdraw(5000)

    a1.info()
    a2.info()
if __name__ == '__main__':
    print('模块信息:',__doc__)
    print('Account类信息:',Account.__doc__)
    main()

import account

u1 = account.Account('Tom','5004516',10000)
u2 = account.Account('Jerry','5003217',10000)

u1.deposit(5000)
u1.info()

u2.withdraw(5000)
u2.info()

from account import Account

u1 = Account('Tom','5004516',10000)
u2 = Account('Jerry','5003217',10000)

u1.deposit(5000)
u1.info()

u2.withdraw(5000)
u2.info()

实验任务3

class Shape:
    def info(self):
        print('形状基类')

class Rect(Shape):
    def __init__(self,x,y,width,length):
        self._x = x
        self._y = y
        self._width = width
        self._length = length

    def info(self):
        print(f'矩形左上角顶点坐标:({self._x},{self._y})')
        print(f'矩形宽:{self._width}')
        print(f'矩形长:{self._length}')

    def area(self):
        return self._width*self._length

    def perimeter(self):
        return (self._width + self._length)*2

class Circle(Shape):
    def __init__(self,x,y,radius):
        self._x = x
        self._y = y
        self._r = radius

    def info(self):
        print(f'圆心:({self._x},{self._y})')
        print(f'半径:{self._r}')

    def area(self):
        return 3.14*self._r*self._r

    def perimeter(self):
        return 2*3.14*self._r

def main():
    r1 = Rect(1,1,5,9)
    r1.info()
    print(f'矩形面积:',r1.area())
    print(f'矩形周长:',r1.perimeter())

    c1 = Circle(2,3,10)
    c1.info()
    print(f'圆面积:{c1.area():.2f}')
    print(f'圆周长:{c1.perimeter():.2f}')

if __name__ == '__main__':
    main()

from shape import Rect as rect,Circle as circle

r1 = rect(3,3,5,2)
r1.info()
print(f'矩形面积:',r1.area())
print(f'矩形周长:',r1.perimeter())

c1 = circle(5,5,1)
c1.info()
print(f'圆面积:{c1.area():.2f}')
print(f'圆周长:{c1.perimeter():.2f}')

实验任务5

class StudentDoc:
    def __init__(self,studentnumber,name,major,point):
        self._studentnumber = studentnumber
        self._name = name
        self._major = major
        self._point = point
    def info(self):
        print(f'学生学号：{self._studentnumber}')
        print(f'学生姓名：{self._name}')
        print(f'学生专业：{self._major}')
        print(f'Python课程分数：{self._point}')
    def change_point(self,newpoint):
        self._point = newpoint
        return newpoint
def main():
    a1 = StudentDoc('123', 'Bob', 'python', '90')
    a1.change_point(99)
    a1.info()
if __name__ == '__main__':
    main()

from student import StudentDoc

s1 = StudentDoc('202013420013','cc','python',99)
s1.info()

s2 = StudentDoc('202013420014','bb','python',98)
s2.info()

s1.change_point(100)
s2.change_point(100)

s1.info()
s2.info()