擅长:python、mysql、java
<p>一个新的类方法可能比重写<code>__new__</code>更好:</p>
<pre><code>class Color(Enum):
black = 0
red = 1
@classmethod
def from_int(cls, x):
return cls(x%2)
</code></pre>
<p>然后</p>
<pre><code>>>> Color.from_int(6)
<Color.black: 0>
>>> Color.from_int(7)
<Color.red: 1>
</code></pre>