Python:无法将JSON文件转换为CSV

我有下面的代码，可以将JSON文件转换为CSV文件

import json
import csv

infractions = open("C:\\Users\\Alan\\Downloads\\open.json","r")
infractions_parsed = json.loads(infractions)
infractions_data = infractions_parsed['infractions']

# open a file for writing
csv_data = open('Data.csv', 'w')
# create the csv writer object
csvwriter = csv.writer(csv_data)
count = 0
for inf in infractions_data:
      if count == 0:
             header = inf.keys()
             csvwriter.writerow(header)
             count += 1
      csvwriter.writerow(inf.values())
employ_data.close()

然而，我得到了这个错误。为什么会这样

C:\Users\Alan\Desktop>python monkeytennis.py
Traceback (most recent call last):
  File "monkeytennis.py", line 5, in <module>
    infractions_parsed = json.loads(infractions)
  File "C:\Python27\lib\json\__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "C:\Python27\lib\json\decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
TypeError: expected string or buffer

---

infractions

是一个文件对象，不能直接传递给

json.loads（）

。要么先读一读：

infractions_parsed = json.loads(infractions.read())

或者使用

json.load

（不带's'），它需要缓冲区

infractions_parsed = json.load(infractions)

---

使用

csv.DictWriter

。

infractions_parsed = json.load(infractions)