擅长:python、mysql、java
<p>你的缩进是错误的<code>numlist.append(item)</code>在while循环之外,所以列表永远不会增长,while运行了无限次</p>
<pre><code>numlist = []
maxnumlist = 20
while len(numlist) < maxnumlist:
item = input("Enter a number: ")
# notice this statement is inside while loop
numlist.append(item)
print numlist
print "Here are some stats"
print (numlist)
lowestnum = min(numlist)
highestnum = max(numlist)
total = sum(numlist)
ave = float(sum(numlist)) / len(numlist)
print (lowestnum)
print (highestnum)
print (total)
print (ave)
input("\n\nPress the enter key to exit.")
</code></pre>