擅长:python、mysql、java
<p>像这样:</p>
<pre><code>In [56]: with open("abc") as f:
numRatings=[]
avgRating=[]
for line in f:
f,s,t=map(float,line.split("|"))
numRatings.append(s)
avgRating.append(t)
....:
In [57]: numRatings
Out[57]: [452.0, 131.0, 90.0, 209.0]
In [58]: avgRating
Out[58]: [3.9, 3.2, 3.0, 3.6]
</code></pre>
<p>或者:</p>
^{pr2}$