擅长:python、mysql、java
<p>您可以以一种相当直截了当、易读且高效的方式做您想做的事情,如下所示。我制作了<code>only_values</code>a<code>set</code>以防止重复,正如您在评论中要求的那样</p>
<pre><code>my_dict = {'Bob': ['Paul', 'Mark', 'Carol', 'Leanne', 'Will'],
'Carol': ['Mark', 'Leanne'],
'Farley': ['Paul'],
'Leanne': ['Sarai'],
'Larry': ['Carol', 'Mark', 'Leanne', 'Will'],
'Mark': ['Philip', 'Zach'],
'Paul': ['Zach'],
'Will': ['Leanne', 'Mark'],
'Zach': ['Philip']}
only_values = {person for people in my_dict.values()
for person in people
if person not in my_dict}
print(only_values) # -> {'Philip', 'Sarai'}
</code></pre>