擅长:python、mysql、java
<p>迭代用户代码显示每个项都是字符串列表:</p>
<pre><code> for x in userCodes:
print(x)
</code></pre>
<p>退货:</p>
<pre><code> ['3']
['4']
['5']
['35']
['56']
['100']
</code></pre>
<p>所以有很多可能的解决方法,其中之一是:</p>
<pre><code>def generateUserCode():
with open ('/MyLocation/user_codes.csv') as csvDataFile:
userCodes = csv.reader(csvDataFile)
userCodes = [int(item[0]) for item in userCodes]
for x in range(0, 201):
if x not in userCodes:
return x
</code></pre>