擅长:python、mysql、java
<pre><code>self.message(sender, "Toplam " + str(len(onlines))+ " kişi açık.")
</code></pre>
<p>您试图将字符串与整数连接起来。你知道吗</p>
<p>内置函数<a href="https://docs.python.org/2/library/functions.html#len" rel="nofollow">^{<cd1>}</a>将始终返回一个<strong>整数类型</strong>,因此在将它连接到另一个字符串时,必须<strong>将其转换为带有<a href="https://docs.python.org/2/library/functions.html#str" rel="nofollow">^{<cd2>}</a>的字符串。你知道吗</p>
<pre><code>len(...)
len(object)
Return the number of items of a sequence or collection.
</code></pre>