Funktion gibt keinen Wert zurück

Question

Bitte helfen Sie. Ich habe Probleme mit meiner getroofCalcs() Funktion, die keine Variablen zurückgibt. Speziell die roofArea Variable im Moment. Dies ist ein grundlegendes Programm für meine Einführung in die Programmierklasse und ich kann nicht herausfinden, warum, wenn ich dies ausführe ich immer den Fehler, dass roofArea nicht definiert ist, wenn ich für die getshingleCalcs() Funktion aufrufen. Dieser Code ist in 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()ist Wert zurückkehrt - es ist ein Tupel Rückkehr der berechneten Werte drei aus. Das Problem ist jedoch, dass der Rückgabewert nicht an eine Variable gebunden ist und somit verloren geht. Sie können den Code ändern, in dem der Aufruf von getroofCalcs() in main() wird, den Rückgabewert der Funktion einer Variablen zu binden:

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

Dies ist auf die Variable result das Tupel von getroofCalcs() zurück binden. Es ist auch möglich, das Tupel direkt in einzelne Variablen wie folgt auspacken:

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

nun der Aufruf an getshingleCalcs() sollte funktionieren.

N.B. gibt es ein ähnliches Problem mit dem Aufruf an getshingleCalcs(), wo der Rückgabewert verloren geht, da es an keine Variable (en) gebunden ist. Sie sollten diese Zeile auch ändern in:

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