擅长:python、mysql、java
<p>利用上面的一些想法,我还想将<code>customer_group</code>作为<code>received_on</code>之外的另一个条件。我得到了预期的结果。你知道吗</p>
<pre><code>conditions, result = [], []
for d in data:
condition = (d['received_on'], d['customer_group'])
if condition not in conditions:
result.append(d)
conditions.append(condition)
print(len(result))
</code></pre>