擅长:python、mysql、java
<p>使用<code>re</code>模块和内置<code>open</code>函数:</p>
<pre><code>import re
with open('Alldata10.csv', 'r') as file_r, open('Alldata10_revised.csv', 'w') as file_w:
for line in file_r:
line = line.split(',')
line[0] = re.sub('[^a-zA-Z]+', '', line[0])
line = ','.join(line)
file_w.write(line)
</code></pre>