Question

我有一个从CSV文件读取并将内容转储到所选文件的函数。此csv文件的内容是一列，其中每行包含一系列这样的JSON对象（使用jsonlint验证）：

 [{"className": "Merchant", "__type": "Pointer", "objectId": "S8IGOwBn8Y"}, {"className": "Merchant", "__type": "Pointer", "objectId": "psNnxwFVmv"}, {"className": "Merchant", "__type": "Pointer", "objectId": "IHcC9ikKBJ"}, {"className": "Merchant", "__type": "Pointer", "objectId": "RVprbh5nWx"}, {"className": "Merchant", "__type": "Pointer", "objectId": "47Zjn9RRov"}, {"className": "Merchant", "__type": "Pointer", "objectId": "CoGtlmGzyo"}, {"className": "Merchant", "__type": "Pointer", "objectId": "yJHn9dBCIT"}, {"className": "Merchant", "__type": "Pointer", "objectId": "nEOY9RPRD4"}]

为了概念化这一点，这就是我想要的：

csv file ---> function that I wrote ---> something.json

在这种情况下，我使用test.csv作为输入，使用test.txt作为输出。它似乎适用于第一个json流，但有一个怪癖：

第一个JSON对象出来就好了：

[

{"className": "Merchant", "__type": "Pointer", "objectId": "S8IGOwBn8Y"}, 
{"className": "Merchant", "__type": "Pointer", "objectId": "psNnxwFVmv"}, 
{"className": "Merchant", "__type": "Pointer", "objectId": "IHcC9ikKBJ"}],

但在那之后，他们开始这样出现：

"[{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""S8IGOwBn8Y""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"":  ""psNnxwFVmv""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""IHcC9ikKBJ""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""RVprbh5nWx""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""47Zjn9RRov""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""CoGtlmGzyo""}, 
{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""yJHn9dBCIT""}, 
 {""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""nEOY9RPRD4""}', 
'\n[{""className"": ""Merchant"", ""__type"": ""Pointer"", ""objectId"": ""tNgLB9dobR""},

这是执行此操作的功能：

def read_csv(thefile):

    f = open('test.txt','w')
    with open(thefile, 'rb') as csvfile:

        #based on python documentation
        spamreader = csv.reader(csvfile, delimiter=']')
        for row in spamreader:
            f.write(str(row))

    f.close()

两个问题：

如何确保输出一致？换句话说，如何消除“”和换行符，以便所有JSON都有效？它与我正在添加的nlsparams有关吗？
最后，我不想转储到.txt文件，而是转储到.json文件。如何才能做到这一点？

感谢您的回复！

Answer 1

我的猜测 - 不测试 - ：

import json
with open('test.txt','r') as input_file:
    with open('output.json','wb') as output_file:
        for row in input_file.readlines():
            output_file.write(json.loads(row))

在任何情况下，使用此lib都会对您有所帮助：https://docs.python.org/2/library/json.html

Python和CSV：从CSV

1 个答案: