解碼python中的JSON文本文件

Question

我有一個文本文件，其中每行是不同的JSON數組，具有相同的一組鍵，但每行的值不同。每一行的格式如下所示：

{"Key A":"Value A1","Key B":"Value B1","Key C":"Value C1, Value C2, Value C3"} 

我想拉一個關鍵的價值觀和另一個關鍵和導出爲CSV文件的第4個值。

我所要的輸出是這樣的：文件

Value A1  ["Value C1", "Value C2", "Value C3"] 
Value A12  ["Value C12", "Value C22", "Value C32"] 

到目前爲止，我已經拆分成多行這樣的：

import json 
import csv 

jsonmov = [] 
with open('step3_desired_output.txt') as step3: 
    for line in step3: 
     jsonmov.append(json.loads(line)) 


print jsonmov{u'Title',[u'Actors'[0:3]]} #print each line from jsonmov's title and 4 actors 

這給了我一個錯誤：

TypeError: list indices must be integers, not tuple 

打印行的另一種語法：

print jsonmov(u'Title',u'Actors') 

給出了錯誤

TypeError: 'list' object is not callable: 

如何產生CSV文件格式正確任何想法？

Answer 1

import json 
import csv 

INPUT = 'step3_desired_output.txt' 
OUTPUT = 'my.csv' 
MAXACTORS = 3 

with open(OUTPUT, 'wb') as outf: 
    outcsv = csv.writer(outf) 
    with open(INPUT) as inf: 
     for line in inf: 
      mv = json.loads(line) 
      title = mv['Title'] 
      actors = mv['Actors'].split(', ', MAXACTORS) 
      outcsv.writerow([title] + actors[:MAXACTORS]) 

Answer 2

你的意思是這樣的：

import json 
import csv 

with open('/tmp/test.json') as f, open('/tmp/jout.csv', 'w') as fout: 
    writer=csv.writer(fout) 
    for line in f: 
     jline=json.loads(line) 
     print jline[u'Key A']+'\t['+jline[u'Key C']+']' 
     # Value A1 [Value C1, Value C2, Value C3] 
     # write to writer... 

---

編輯

也許：

import json 

with open('/tmp/test.json') as f, open('/tmp/jout.csv', 'w') as fout: 
    for line in f: 
     data=[] 
     jline=json.loads(line) 
     print jline[u'Key A']+'\t['+', '.join('"{}"'.format(e.strip()) for e in jline[u'Key C'].split(','))+']' 
     # Value A1 ["Value C1", "Value C2", "Value C3"] 
     # add '\n' if you print to a file...