擅长:python、mysql、java
<p>Python 3.6版:</p>
<pre><code>class Sim():
def __init__(self, *args, **kwargs):
self._sim_info: SimInfo = None
</code></pre>
<p>其他python:</p>
<pre><code>class Sim():
def __init__(self, *args, **kwargs):
self._sim_info = None # type: SimInfo
</code></pre>
<p>它叫“<a href="https://docs.python.org/3/library/typing.html" rel="nofollow noreferrer">type hints</a>”</p>