擅长:python、mysql、java
<p>正如我在评论中提到的,您可以使用<code>nrows</code></p>
<pre><code>import pandas as pd
df1 = pd.read_csv('testNegatif.csv')
df2 = pd.read_csv('trainNegatif.csv', nrows=10)
output=df1.append(df2)
output.to_csv("output.csv", sep=',')
</code></pre>
<p>有关更多选项,请参见:<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html" rel="nofollow noreferrer">https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html</a></p>