NameError：名称“mNewCal”未定义问题

Question

我的代码有些问题。我不确定它有什么问题。谢谢

if mNewCal or fNewCal < 1200:

NameError：未定义名称“mNewCal”

对不起，如果格式有点奇怪，堆栈溢出让它变得很奇怪。

gender = int(input("enter your gender as a number from the following \n Male: 1 \n Female: 2 \n " ))
height = int(input("Please enter your height in inches: "))
age = int(input("Please enter your age: "))
weight = int(input("Enter your weight in lbs: "))
exercise = int(input("How much exercise do you do during the week (enter number) \n little to no: 1 \n light: 2 \n moderate: 3 \n heavy: 4 \n  "))
if gender == 1:
   mBMR = 66 + (6.3 * weight) + (12.9 * height) - (6.8 * age)
elif gender == 2:
    fBMR = 655 + (4.3 * weight) + (4.7 * height) - (4.7 * age)

if gender == 1:
    if exercise == 1:
        cal = mBMR * 1.2

    elif exercise == 2:
        cal = mBMR * 1.375

    elif exercise == 3:
        cal = mBMR * 1.55

    elif exercise == 4:
        cal = mBMR * 1.8

else:
    if exercise == 1:
        cal = fBMR * 1.2

    elif exercise == 2:
        cal = fBMR * 1.375

    elif exercise == 3:
        cal = fBMR * 1.55

    elif exercise == 4:
        cal = fBMR * 1.8



if gender == 1:
    mTotalCal = mBMR * 1.2
    #print(mTotalCal)

else:
    fTotalCal = fBMR * 1.2
   # print(fTotalCal)


looseWeight = str(input("do you want to loose weight? if yes, enter Y: \n if no enter N: \n "))

if looseWeight == "Y":
    yesWeight = int(input("How much weight do you want to loose (lbs) ? "))

else:
    print("thank you for using Nakul Industries health program!")


weeks = yesWeight
days = weeks * 7
months = days / 30


if gender == 1:
    mNewCal = mTotalCal - 500
else:
    fNewCal = fTotalCal - 500



if mNewCal or fNewCal < 1200:
    print("WARNING! your total intake will be less then 1200 calories, please consult a doctor before following this.")
    print("In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")
else:
    print(
        "In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")

Answer 1

您只定义 fNewCal 或 mNewCal 并在 or 语句中同时拥有两者，如果您尚未定义其中一个变量并且由 if 语句检查，它将引发 NameError 像这样。您应该只使用一个变量，例如 newCal，并使用现有的 gender 变量来确定它是女性还是男性，如下所示：

gender = int(input("enter your gender as a number from the following \n Male: 1 \n Female: 2 \n "))
height = int(input("Please enter your height in inches: "))
age = int(input("Please enter your age: "))
weight = int(input("Enter your weight in lbs: "))
exercise = int(input(
    "How much exercise do you do during the week (enter number) \n little to no: 1 \n light: 2 \n moderate: 3 \n heavy: 4 \n  "))
if gender == 1:
    mBMR = 66 + (6.3 * weight) + (12.9 * height) - (6.8 * age)
elif gender == 2:
    fBMR = 655 + (4.3 * weight) + (4.7 * height) - (4.7 * age)

if gender == 1:
    if exercise == 1:
        cal = mBMR * 1.2

    elif exercise == 2:
        cal = mBMR * 1.375

    elif exercise == 3:
        cal = mBMR * 1.55

    elif exercise == 4:
        cal = mBMR * 1.8

else:
    if exercise == 1:
        cal = fBMR * 1.2

    elif exercise == 2:
        cal = fBMR * 1.375

    elif exercise == 3:
        cal = fBMR * 1.55

    elif exercise == 4:
        cal = fBMR * 1.8

if gender == 1:
    mTotalCal = mBMR * 1.2
    # print(mTotalCal)

else:
    fTotalCal = fBMR * 1.2
# print(fTotalCal)


looseWeight = str(input("do you want to loose weight? if yes, enter Y: \n if no enter N: \n "))

if looseWeight == "Y":
    yesWeight = int(input("How much weight do you want to loose (lbs) ? "))

else:
    print("thank you for using Nakul Industries health program!")

weeks = yesWeight
days = weeks * 7
months = days / 30

if gender == 1:
    newCal = mTotalCal - 500
else:
    newCal = fTotalCal - 500

if newCal < 1200:
    print("WARNING! your total intake will be less then 1200 calories, please consult a doctor before following this.")
    print(
        "In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")
else:
    print(
        "In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")

一般来说，既然您已经有了一个gender 变量，那么也没有理由对您的其他变量进行性别处理，尽管其余变量目前不会破坏程序，因为它们都取决于gender。这里没有无意义的性别变量，这样可以正常工作：

gender = int(input("enter your gender as a number from the following \n Male: 1 \n Female: 2 \n "))
height = int(input("Please enter your height in inches: "))
age = int(input("Please enter your age: "))
weight = int(input("Enter your weight in lbs: "))
exercise = int(input(
    "How much exercise do you do during the week (enter number) \n little to no: 1 \n light: 2 \n moderate: 3 \n heavy: 4 \n  "))
if gender == 1:
    BMR = 66 + (6.3 * weight) + (12.9 * height) - (6.8 * age)
elif gender == 2:
    BMR = 655 + (4.3 * weight) + (4.7 * height) - (4.7 * age)

if gender == 1:
    if exercise == 1:
        cal = BMR * 1.2

    elif exercise == 2:
        cal = BMR * 1.375

    elif exercise == 3:
        cal = BMR * 1.55

    elif exercise == 4:
        cal = BMR * 1.8

else:
    if exercise == 1:
        cal = BMR * 1.2

    elif exercise == 2:
        cal = BMR * 1.375

    elif exercise == 3:
        cal = BMR * 1.55

    elif exercise == 4:
        cal = BMR * 1.8

if gender == 1:
    TotalCal = BMR * 1.2
    # print(mTotalCal)

else:
    TotalCal = BMR * 1.2
# print(fTotalCal)


loseWeight = str(input("do you want to loose weight? if yes, enter Y: \n if no enter N: \n "))

if loseWeight == "Y":
    yesWeight = int(input("How much weight do you want to loose (lbs) ? "))

else:
    print("thank you for using Nakul Industries health program!")

weeks = yesWeight
days = weeks * 7
months = days / 30

if gender == 1:
    newCal = TotalCal - 500
else:
    newCal = TotalCal - 500

if newCal < 1200:
    print("WARNING! your total intake will be less then 1200 calories, please consult a doctor before following this.")
    print(
        "In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")
else:
    print(
        "In order to lose " + yesWeight + " ,it will take " + weeks + " weeks " + "\n" + "or " + days + " days" + "\n or " + "approximately " + months + " months.")