擅长:python、mysql、java
<p><code>set</code>有一个专用的方法来查找<code>intersection</code>。然后您可以迭代交叉点并打印每个元素。你知道吗</p>
<pre><code>def print_common_members(a, b):
"""
Given two sets, print the intersection, or "No common elements".
"""
inter = a.intersection(b)
if inter: # empty sets are Falsy, non empty sets are Truthy
for elt in inter:
print(elt)
else:
print("No common elements")
a = {1, 2, 3}
b = {2, 3, 4}
c = {7, 8, 9}
print_common_members(a, b)
print()
print_common_members(a, c)
</code></pre>
<hr/>
<h3>输出:</h3>
<pre><code>2
3
No common elements
</code></pre>