擅长:python、mysql、java
<p>使用<code>Counter</code>:</p>
<pre><code>from collections import Counter
teams = ['Baltimore Colts',
'Dallas Cowboys',
'Dallas Cowboys',
'Dallas Cowboys',
'Denver Broncos',
'Dallas Cowboys',
'Indianapolis Colts',
'Indianapolis Colts']
c = Counter(teams)
# Counter({'Dallas Cowboys': 4, 'Indianapolis Colts': 2, 'Denver Broncos': 1, 'Baltimore Colts': 1})
print c['Dallas Cowboys']
# Prints 4
</code></pre>
<p>从文件中读取列表是另一回事:</p>
<pre><code>with open(filename, 'r') as f:
teams = f.readlines()
</code></pre>