擅长:python、mysql、java
<p>您可以将<code>defaultdict(int)</code>用于您的目的:</p>
<pre><code>from collections import defaultdict
my_dict = defaultdict(int)
w = open("C:\\Users\\xxx\\Desktop\\test.txt", "r")
for line in w:
ip = line.split(' ')[0]
my_dict[ip]+=1
my_dict # defaultdict(<class 'int'>, {'192.168.1.7': 5, '192.168.1.1': 3, '192.168.1.5': 2})
</code></pre>