擅长:python、mysql、java
<pre><code>l = [{'COUNTRY': 'UK', 'STUDENT': 'JOHN'}, {'COUNTRY': 'PT', 'STUDENT':'PEDRO'}, {'COUNTRY': 'UK', 'STUDENT': 'KYLE'}, {'COUNTRY': 'IT', 'STUDENT':'PIRLO'}, {'COUNTRY': 'PT', 'STUDENT':'ANA'}, {'COUNTRY': 'FR', 'STUDENT':'VITO'}, {'COUNTRY': 'FR', 'STUDENT':'LOUIS'}]
myDict = {}
for d in l:
c = d['COUNTRY']
myDict[c] = myDict.get(c,0)+1
print(myDict)
country = myDict.values()
frequency = myDict.keys()
print(country)
print(frequency)
=========
{'UK': 2, 'PT': 2, 'IT': 1, 'FR': 2}
dict_values([2, 2, 1, 2])
dict_keys(['UK', 'PT', 'IT', 'FR'])
</code></pre>