擅长:python、mysql、java
<pre><code>s = '''rizwan,10
arsalan,30
ali,40
suffiyan,60'''
s = s.split('\n')
mylist=['in','out','out','in']
for i, v in enumerate(mylist):
s[i] += ',' + v
print('\n'.join(s))
</code></pre>
<p>输出</p>
<pre><code>rizwan,10,in
arsalan,30,out
ali,40,out
suffiyan,60,in
</code></pre>
<p>在您的情况下,您需要读取文件并对其进行写入</p>
<pre><code>with open('test.csv', 'r') as file:
s = file.read()
s = s.split('\n')
mylist=['in','out','out','in']
for i, v in enumerate(mylist):
s[i+2] += ',' + v
with open('test.csv', 'w') as file:
file.write('\n'.join(s))
</code></pre>