Функция, не возвращающая значение

Question

Пожалуйста, помогите. У меня возникают проблемы с моей функцией getroofCalcs(), не возвращающей переменные. В частности, переменная roofArea на данный момент. Это базовая программа для моего введения в класс программирования, и я не могу понять, почему, когда я запускаю это, я продолжаю получать ошибку, которая не определена при вызове функции getshingleCalcs(). Этот код находится в Python.

# Stick Built Garage Estimator 
# Written by: John Ruehs 

#Initialization Variables 

#Declare doAgain 

#Input Variables 

#Declare length 
#Declare width 
#Declare studSpace 
#Declare wallHeight 
#Declare roofPitch 
#Declare overHang 
#Declare bigGarageDoor 
#Declare smallGarageDoor 
#Declare entryDoor 
#Declare window 

#Calculated Variables 

#Declare topTiePlate 
#Declare bottomPlate 
#Declare studs 
#Declare wallSheathing 
#Declare roofSheathing 
#Declare shingles 
#Declare shingleStarter 
#Declare ridgeCap 
#Declare roofArea 
#Declare rakeLength 
#Declare studAdj 
#Declare botPlateAdj 
#Declare wallAreaAdj 
#Declare gableArea 

import math 

def main(): 
    doAgain = "yes" 
    if doAgain == "yes": 
     length, width, studSpace, wallHeight, roofPitch, overHang, bigGarageDoor, smallGarageDoor, entryDoor, windows = getinputs() 
     getframeCalcs(length, width, studSpace, bigGarageDoor, smallGarageDoor, entryDoor, windows) 
     getwallCalcs(length, width, wallHeight, bigGarageDoor, smallGarageDoor, entryDoor, roofPitch)#need to put variables needed here 
     getroofCalcs(length, width, roofPitch, overHang)#need to put variables needed here 
     getshingleCalcs(length, roofArea, rakeLength)#need to put variables needed here 
     display(topTiePlate, bottomPlate, studs, wallSheathing, roofSheathing, shingles, shingleStarter, ridgeCap, rakeLength)#need to put variables needed here 
     doAgain = input("Do you want to run this again('yes' or 'no')?") 
    else: 
     print("") 


def getinputs(): 
    length = float(input("Enter the length of the building: ")) 
    width = float(input("Enter the width of the building: ")) 
    studSpace = float(input("Enter the stud spacing: ")) 
    wallHeight = float(input("Enter the wall height: ")) 
    roofPitch = input("Enter the roof pitch: ") 
    overHang = float(input("Enter the over-hang in inches: ")) 
    bigGarageDoor = int(input("Enter the number of 16' garage doors: ")) 
    smallGarageDoor = int(input("Enter the number of 9' garage doors: ")) 
    entryDoor = int(input("Enter the number of entry doors: ")) 
    windows = int(input("Enter the number of windows that are smaller than 3' wide: ")) 
    return length, width, studSpace, wallHeight, roofPitch, overHang, bigGarageDoor, smallGarageDoor, entryDoor, windows 

def getframeCalcs(length, width, studSpace, bigGarageDoor, smallGarageDoor, entryDoor, windows): 
    studAdj = ((bigGarageDoor*-7)+(smallGarageDoor*-3)+(entryDoor*2)+(windows*5)) 
    botPlateAdj = ((bigGarageDoor*-16)+(smallGarageDoor*-9)+(entryDoor*-3)) 
    studs = math.ceil((((((((length*2)+(width*2))*12)/studSpace)+8)*1.1)+studAdj)) 
    topTiePlate = math.ceil((((length*2)+(width*2))/16)*2) 
    bottomPlate = math.ceil(((((length*2)+(width*2))+botPlateAdj)/16)) 
    return studs, topTiePlate, bottomPlate 

def getwallCalcs(length, width, wallHeight, bigGarageDoor, smallGarageDoor, entryDoor, roofPitch): 
    wallAreaAdj = ((bigGarageDoor*-112)+(smallGarageDoor*-63)+(entryDoor*-21.77)) 
    if roofPitch == "1/12": 
     gableArea = math.ceil(((((width/2)+0.5)*1)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "2/12": 
     gableArea = math.ceil(((((width/2)+0.5)*2)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "3/12": 
     gableArea = math.ceil(((((width/2)+0.5)*3)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "4/12": 
     gableArea = math.ceil(((((width/2)+0.5)*4)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "5/12": 
     gableArea = math.ceil(((((width/2)+0.5)*5)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "6/12": 
     gableArea = math.ceil(((((width/2)+0.5)*6)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "7/12": 
     gableArea = math.ceil(((((width/2)+0.5)*7)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "8/12": 
     gableArea = math.ceil(((((width/2)+0.5)*8)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "9/12": 
     gableArea = math.ceil(((((width/2)+0.5)*9)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "10/12": 
     gableArea = math.ceil(((((width/2)+0.5)*10)/12)*(((width/2)+0.5))*2) 
    elif roofPitch == "11/12": 
     gableArea = math.ceil(((((width/2)+0.5)*11)/12)*(((width/2)+0.5))*2) 
    else: 
     gabelArea = math.ceil(((((width/2)+0.5)*12)/12)*(((width/2)+0.5))*2) 
    wallSheathing = math.ceil(((((((length*2)+(width*2))*wallHeight)+gableArea)+wallAreaAdj)/32)) 
    return wallSheathing 

def getroofCalcs(length, width, roofPitch, overHang): 
    if roofPitch == "1/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*1)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "2/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*2)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "3/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*3)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "4/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*4)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "5/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*5)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "6/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*6)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "7/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*7)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "8/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*8)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "9/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*9)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "10/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*10)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    elif roofPitch == "11/12": 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*11)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 
    else: 
     roofArea = math.ceil((((((((((width/2)+(overHang/12))*12)/12)**2)+(((width/2)+(overHang/12))**2))**.5)*length)*2)) 

    roofSheathing = math.ceil(roofArea/32) 

    if roofPitch == "1/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*1)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "2/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*2)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "3/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*3)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "4/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*4)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "5/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*5)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "6/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*6)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "7/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*7)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "8/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*8)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "9/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*9)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "10/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*10)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    elif roofPitch == "11/12": 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*11)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    else: 
     rakeLength = math.ceil((((((((width/2)+(overHang/12))*12)/12)**2)+(((width/2)+(overHang/12))**2))**.5)) 
    return roofArea, roofSheathing, rakeLength 

def getshingleCalcs(length, roofArea, rakeLength): 
    shingles = math.ceil(((roofArea/100)*3)) 
    shingleStarter = math.ceil((((rakeLength*4)+(length*2))/120)) 
    ridgeCap = math.ceil(length/20) 
    return shingles, shingleStarter, ridgeCap 

def display(topTiePlate, bottomPlate, studs, wallSheathing, roofSheathing, shingles, shingleStarter, ridgeCap, rakeLength): 
    print("") 
    print("16' Top Plate/Tie Plate: ", topTiePlate) 
    print("16' Bottom Plate: ", bottomPlate) 
    print("Studs: ", studs) 
    print("4'x8' Wall Sheathing: ", wallSheathing) 
    print("4'x8' Roof Sheathing: ", roofSheathing) 
    print("Rake Length (Rounded Up): ", rakeLength) 
    print("Bundles of Shingles: ", shingles) 
    print("Bundles of Shingle Starter: ", shingleStarter) 
    print("Bundles of Ridge Cap: ", ridgeCap) 
    print("") 
    print("") 

main() 

Answer 1

getroofCalcs()является возвращает значение - это возвращает кортеж, состоящий из трех расчетных значений. Однако проблема состоит в том, что возвращаемое значение не привязано к какой-либо переменной и поэтому теряется. Вы можете изменить код, в котором вызов getroofCalcs() выполнен в main() связать возвращаемое значение функции переменной:

result = getroofCalcs(length, width, roofPitch, overHang)#need to put variables needed here 

Это будет связываться с переменной result кортеж, возвращаемый getroofCalcs(). Кроме того, можно распаковать кортеж непосредственно в отдельные переменные, как это:

roofArea, roofSheathing, rakeLength = getroofCalcs(length, width, roofPitch, overHang) 

Теперь вызов getshingleCalcs() должен работать.

N.B. есть аналогичная проблема с вызовом getshingleCalcs(), где возвращаемое значение теряется, поскольку оно не привязано к какой-либо переменной (-ам). Вы также должны изменить эту строку:

shingles, shingleStarter, ridgeCap = getshingleCalcs(length, roofArea, rakeLength)