擅长:python、mysql、java
<p>您尝试迭代“plugins”类型的单个项,而不是插件列表:</p>
<pre><code># plugins is a list
plugins = plugins[1]
# now plugins is a single element
</code></pre>
<p>您可以强制插件始终是一个列表:</p>
<pre><code>self.plugins = [self.plugins[1]]
</code></pre>
<p>或者更一般地说:</p>
<pre><code># select one or more plugins from the initial list
self.plugins = selectplugin(self.plugins)
# check type of plugins
if not isinstance(self.plugins, list):
self.plugins = [self.plugins]
for plugin in self.plugins:
# do some stuff
</code></pre>