[英]Problems with json file (Python)
我對此json文件有問題: Zips.json ! 。
我沒有找到一種方法來計算每個州的郵政編碼數量。 我嘗試了很多這樣的方法:
file=open("C:\Users\Alex\Downloads/zips.json","r")
lines=json.loads(file.readline())
number=0
states=lines["state"]
for line in file:
lines=json.loads(line)
if lines ["state"]==states:
number=number+1
else:
print u"states:",states, u"Number of codes: ",number
states=lines["state"]
最簡單的方法是使用collections.Counter
:
import json
from collections import Counter
from operator import itemgetter
counter = None
state_getter = itemgetter('state')
with open('zips.json') as fh:
zips_data = (json.loads(line) for line in fh)
states_names = map(itemgetter('state'), zips_data)
counter = Counter(states_names)
print(counter)
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