<p>所以我做了一个statcalc,除了添加之外,一切都正常。当我选择要添加的选项时,只会跳过它并说选择一个选项。我在想怎么了?</p>
<pre><code>numberstoadd = input("What is the first number you want to add? ")
numbertoadd = input("What do you want to add to it? ")
sum = numbertoadd + numberstoadd
print sum
</code></pre>
<pre><code>print("Welcome to fizz buzz")
num1=input("Choose a number from 1 to 100")
if num1 is >= 50:
print("hello")
else:
print("good bye")
</code></pre>