擅长:python、mysql、java
<p>我建议将csv作为字典读入,只更新一个值。你知道吗</p>
<pre><code>import csv
d = {}
with open('test.txt', newline='') as f:
reader = csv.reader(f)
for row in reader:
key,value = row
d[key] = value
d['Buddy'] = 200
with open('test2.txt','w', newline='') as f:
writer = csv.writer(f)
for key, value in d.items():
writer.writerow([key,value])
</code></pre>