擅长:python、mysql、java
<p>您不会传递类名,而是传递该类的实例</p>
<pre><code>class Point:
def __init__(self, x, y):
self.x = x
self.y = y
class Circle:
def __init__(self, point, radius):
self.point = point
self.radius = radius
</code></pre>
<p>这些类的用法看起来像</p>
<pre><code>point = Point(3, 5)
circle = Circle(point, 2)
</code></pre>