擅长:python、mysql、java
<p>试试这个:-</p>
<pre><code>
a = [{"a":"data1","b":"Nill","c":"data3","d":"Nill"},{"a":"dat1","b":"dat2","c":"dat3","d":"Nill"},{"a":"sa1","b":"sa2","c":"sa3","d":"Nill"}]
result_dict = {'a' : 0, 'b' : 0,'c' :0, 'd' : 0}
for i in a:
for key, value in i.items():
if value =="Nill":
result_dict[key] +=1
print(result_dict)
</code></pre>