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我的問題是,正如你可以看到的標題,錯誤處理。特別是對於變量和符號,這些似乎總是導致NameError並關閉程序。錯誤處理計算器程序中的變量,處理錯誤的數字是好的
我,以及與教程計算器嘗試網上,計算器程序:
#Calculator Program
#this variable tells the loop whether it should loop or not.
# 1 means loop. anything else means don't loop.
loop = 1
#this variable holds the user's choice in the menu:
choice = 0
while loop == 1:
#print what options you have
print "Welcome to calculator.py"
print "your options are:"
print " "
print "1) Addition"
print "2) Subtraction"
print "3) Multiplication"
print "4) Division"
print "5) Quit calculator.py"
print " "
choice = input("Choose your option: ")
if choice == 1:
add1 = input("Add this: ")
add2 = input ("to this: ")
print add1, "+", add2, "=", add1 + add2
elif choice == 2:
sub2 = input("Subtract this: ")
sub1 = input("from this: ")
print sub1, "-", sub2, "=", sub1 - sub2
elif choice == 3:
mul1 = input("Multiply this: ")
mul2 = input("with this: ")
print mul1, "*", mul2, "=", mul1 * mul2
elif choice == 4:
div1 = input("Divide this: ")
div2 = input("by this: ")
print div1, "/", div2, "=", div1/div2
elif choice == a:
print "Not a valid input, please reconsider."
elif choice == 5:
loop = 0
else:
print "Not a valid input, please reconsider."
print " "
print "Thank you for using calculator.py!"
的「其他人」和一些其他的東西都是我自己的。
任何反饋將是有幫助的,這些類型的情況的未來技巧將是太棒了。對於需要幫助這個腦子的東西,你可以看到我是一個初學者。