擅长:python、mysql、java
<p>使用<code>x = []</code>创建列表,使用<code>len(x)</code>获取列表的长度,如果x<;4,则使用<code>while</code>循环条件</p>
<pre><code>x=[]
continueQ=input("would you like to continue?")
if (continueQ=="yes"):
#if there is less than 4
while len(x)<4:
variable=float(input("Input a float to append to the array:"))
x.append(variable)
print(x)
else:
print(x)
else:
print("Goodbye!")
</code></pre>