擅长:python、mysql、java
<p>您可以使用<code>pandas</code>,它有更多的内置功能:</p>
<pre><code>import numpy as np
from io import StringIO
mystr = StringIO("""0812,EP2463,R,FEIGE
0812,EP2466,R,FEIGE
0816,EP2462,R,FEIGE
0816,EP2460,R,FEIGE""")
# replace mystr with 'data.csv'
res = pd.read_csv(mystr, header=None, dtype=object).values.astype(str)
</code></pre>
<p>结果:</p>
^{pr2}$