擅长:python、mysql、java
<p>这会有帮助的</p>
<pre><code>list_dict = [ {'from': '67f', 'to': 'f9b'}, {'from': '67f', 'to': 'f9b'},
{'from': '67f', 'to': 'f9b'}, {'from': 'f9b', 'to': '67f'},
{'from': 'f9b', 'to': '21g'}]
not_wanted_to_keys = []
wanted_list_dict = []
for my_dict in list_dict:
not_wanted_to_keys.append(my_dict['from'])
if my_dict['to'] not in not_wanted_to_keys:
wanted_list_dict.append(my_dict)
print(wanted_list_dict)
</code></pre>