擅长:python、mysql、java
<p>分栏写</p>
<pre class="lang-py prettyprint-override"><code>reader = csv.DictReader(f) # open and write mode opened file
csvWriter = csv.writer(f)
existing_queries = set()
for row in reader:
if reader.line_num == 1:
continue
if row['link'] in existing_queries:
print("Already exists")
else:
csvWriter.writerow("description", "link") # will write
existing_queries.add("description", "link")
</code></pre>
<p>我希望这有帮助</p>