python 继承练习图形的计算
app.py
app
from sector import Sector
from circle import Circle
from square import Square
while True:
print("几何计算器\nV9.0")
print("1. 正方形\n2. 圆形\n3. 扇形")
print("-"*30)
inp = input("请选择图形编号，输出q退出:")
# 正方形
if inp == "1":
square = Square("正方形", 0, 0) # 初始化周长和面积为0
square.say_i()
square.sperimeter_area()
# 圆形
elif inp == "2":
circle = Circle("圆形", 0, 0)
circle.say_i()
circle.sperimeter_area()
# 扇形
elif inp == "3":
sector = Sector("扇形", 0, 0)
sector.say_i()
sector.sperimeter_area()
elif inp == "q":
break
else:
print("选择错误，请重新选择")
geometry.py
图形类
class Geometry():
def __init__(self,name, perimeter, area):
self.name = name
self.perimeter = perimeter
self.area = area
# 说自己
def say_i(self):
print("-"*30)
print(self.name)
print("-" * 30)
# 说周长说面积
def sperimeter_area(self):
print(f"周长是：{self.perimeter}")
print(f"面积是：{self.area}")
print("-" * 30)
正方形类
from geometry import Geometry
class Square(Geometry):
# 计算周长面积 perimeter, area
def sperimeter_area(self):
m = int(input("请输入边长："))
self.perimeter = 4 * m
self.area = m**2
super(Square, self).sperimeter_area()
square.py
正方形类
from geometry import Geometry
class Square(Geometry):
# 计算周长面积 perimeter, area
def sperimeter_area(self):
m = int(input("请输入边长："))
self.perimeter = 4 * m
self.area = m**2
super(Square, self).sperimeter_area()
circle.py
圆形类
from geometry import Geometry
import math
class Circle(Geometry):
# 计算周长面积 perimeter, area
def sperimeter_area(self):
r = int(input("请输入半径："))
self.perimeter = 2 * r * math.pi
self.area = r ** 2 * math.pi
super(Circle, self).sperimeter_area()
sector.py
扇形类
from geometry import Geometry
import math
class Sector(Geometry):
# 计算周长面积 perimeter, area
def sperimeter_area(self):
r = int(input("请输入边长："))
angle = int(input("请输入角度："))
self.perimeter = 2*r + angle/360*2*r*math.pi
self.area = angle/360*math.pi*r**2
super(Sector, self).sperimeter_area()