擅长:python、mysql、java
<p>我测试了以下内容是否符合您的要求:</p>
<pre><code># from for loop onward...
for filename in filelist:
tmpdf = pd.read_csv(os.path.join(targetdir, filename),sep=' ',header=None)
tmpdf[len(tmpdf.columns)] = filename # add column with filename
bigdf = pd.concat([bigdf,tmpdf],ignore_index=True)
</code></pre>