我正在制作一个小的命令提示符菜单程序。用户选择一个字母选项，然后代码将它们带到一小段代码中，为它们进行特定的计算。
我已经可以使用菜单了。但是，当我为分销商运行def main():
variable_to_cause_loop = "Y"
while variable_to_cause_loop == "Y":
print ('A: Accounting')
print ('B: Quick Estimate')
print ('C: Distributors')
User_Menu_Selection = input('Enter an option: ')
if User_Menu_Selection == "A":
print("Feature not available")
elif User_Menu_Selection == "B":
class Shoes:
print('COMPANY MESSAGE', '\n' *5)
print('--> Quick Estimates <--')
def __init__(self, Model, Descpstr, price):
self.Model = Model
self.Descpstr = Descpstr
self.price = int(price)
A100 = Shoes("A100", "Prada Flat Black", 100)
A200= Shoes("A300", "Gucci Heel Black", 275)
product_num = input('> Shoe Model(model number): ')
product_size = input('> Shoe Size: ')
product_qty = input('> Quantitiy: ')
ship_zip_code = input('> Ship to Zip Code: ')
if product_num == "A100" or product_num == "a100":
order_calc = float(A100.price) * float(product_qty)
print (float(order_calc))
elif product_num == "A200" or product_num == "a200":
order_calc = float(A200.price) * float(product_qty)
print (float(order_calc))
elif User_Menu_Selection == "C":
print ("")
print ("DISTRIBUTORS")
print ("")
print ("")
print ("> Elderado's Rep: Jack Reed - Phone # 1-888-562-2229 <")
print ("> Friendly's Rep: Roy Jack Jones - Phone # 1-212-393-9939 <")
print ("> Best Shoes Fort Wayne Rep: Price Gouger - Phone # 1-331-3832 <")
print ("> The Rubber Maker Rep: Crumble Crustipher - Phone # 1-434-1919 <")
variable_to_cause_loop = input ("For Main Menu Type Y" )
main()
时，没有任何显示。我应该改变什么？
<div id="mySidebar" class="sidebar">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<a href="/">Home</a>
<a href="/accounts/login">Login</a>
<a href="#">Profile</a>
<a href="/upload">Upload</a>
<a href="/top_photos">Top Photos</a>
<a href="/aboutus">About Us</a>
<a href="/contact">Contact Us</a>
</div>
答案 0 :(得分：0)
如@ craig-meier的评论中所述，请取消缩进elif User_Menu_Selection == "C":，使其与“ A”和“ B”语句一致。
此外，您正在使用input，因此必须用引号输入"A"。您很可能希望使用raw_input来代替，因此您只需键入A而不带引号即可。