class MakeBox:
def __init__(self, length, width, height, density):
self.length = length
self.width = width
self.height = height
self.density = density
self.reCalc()
def calcVolume(self):
self.volume = self.width * self.length * self.height
def calcSurface(self):
step1 = self.width * self.height * 2
step2 = self.width * self.length * 2
step3 = self.height * self.length * 2
self.surface = step1 + step2 + step3
def calcWeight(self):
self.weight = self.volume * self.density
def reCalc(self):
self.calcVolume()
self.calcSurface()
self.calcWeight()
# Should have a set height,width,length, density (but not for volume,surface,weight as they are derived from the first four)
# should have a get height, width, length, density, volume, surface, weight
# you may also want to rename the properties with an _ to let folks know NOT to access them directly
def setHeight(self,newHeight):
self.height = newHeight
self.reCalc()
def getHeight(self):
return self.height
def printstats(self):
# should not be done this way in class
print("""
Box Height: {0}
Box Width: {1}
Box Length: {2}
Box Density: {3}
Box Volume: {4}
Box Weight: {5}
Box Surface Area: {6}
""".format(self.height,self.width,self.length,self.density,self.volume,self.weight,self.surface))
def __str__(self):
result = """
Box Height: {0}
Box Width: {1}
Box Length: {2}
Box Density: {3}
Box Volume: {4}
Box Weight: {5}
Box Surface Area: {6}
""".format(self.height,self.width,self.length,self.density,self.volume,self.weight,self.surface)
return result
if __name__ == "__main__":
# NOTE: this only runs if file is directly run
# if it has been "imported" this section is ignored as the file is
# no longer the "__main__" file
newbox = MakeBox(5, 10, 2, 3.5)
newbox.printstats()
newbox.height = 50
newbox.reCalc()
newbox.printstats()
nextbox = MakeBox(10, 10, 100, 5.5)
nextbox.printstats()
print(nextbox)
