<p>我有一个问题,用户可以输入空格或什么都不输入,但仍然可以通过程序,我如何防止这种情况发生?我还是python的初学者。</p>
<pre><code>def orderFunction(): # The function which allows the customer to choose delivery or pickup
global deliveryPickup
deliveryPickup = input("Please input delivery or pickup: d for delivery p for pickup")
if deliveryPickup == "d":
global customerName
while True:
try:
customerName = (input("Please input your name"))
if customerName == (""):
print("Please input a valid name")
else:
break
global customerAddress
while True:
try:
customerAddress = (input("Please input your name"))
if customerAddress == (""):
print("Please input a valid Address")
else:
break
global customerPhnum
while True:
try:
customerPhnum = int(input("Please input your phone number"))
except ValueError:
print("Please input a valid phone number")
else:
break
print("There will also be a $3 delivery surcharge")
elif deliveryPickup == "p":
customerName = (input("Please input your name"))
if customerName == (""):
print("Please input a valid name")
orderFunction()
else:
print("Please ensure that you have chosen d for Delivery or p for Pickup")
orderFunction()
orderFunction()
</code></pre>
<p>这是我的尝试,但我得到了各种各样的无凹痕和缩进错误,我认为我的while循环可能是错误的。</p>
<p>本质上,如果我在其中一个客户输入(例如customerName)中输入一个空格或按enter键,它就会被存储起来。这需要防止,我已经尝试过使用while循环来修复它,但显然没有起作用。</p>
<p>希望有人能解决这个问题</p>
<p>非常感谢。</p>