擅长:python、mysql、java
<p>您可以使用<code>self</code>对象的<a href="https://docs.python.org/3.7/library/stdtypes.html#object.__dict__" rel="nofollow noreferrer">^{<cd1>}</a>属性:</p>
<pre><code>class Name:
def __init__(self,name,favfood,favcolour,favsport):
self.name = name
self.favfood = favfood
self.favcolour = favcolour
self.favsport = favsport
for key, value in self.__dict__.items():
if value is not None:
print('%s: %s' % (key, value))
henry = Name("Henry","Sushi","Blue",None)
</code></pre>
<p>该输出:</p>
^{pr2}$