循环只读取第一行文件(Loop only reads 1st line of file)

循环只读取第一行文件(Loop only reads 1st line of file)

我试图用一个小的python脚本将JSON文件转换为XML，但由于某种原因，循环似乎只读取了JSON文件的第一行。

from xml.dom import minidom from json import JSONDecoder import json import sys import csv import os import re import dicttoxml from datetime import datetime, timedelta from functools import partial reload(sys) sys.setdefaultencoding('utf-8') nav = 'navigation_items.bson.json' df = 'testxmloutput.txt' def json2xml(json_obj, line_padding=""): result_list = list() json_obj_type = type(json_obj) if json_obj_type is list: for sub_elem in json_obj: result_list.append(json2xml(sub_elem, line_padding)) return "\n".join(result_list) if json_obj_type is dict: for tag_name in json_obj: sub_obj = json_obj[tag_name] result_list.append("%s<%s>" % (line_padding, tag_name)) result_list.append(json2xml(sub_obj, "\t" + line_padding)) result_list.append("%s</%s>" % (line_padding, tag_name)) return "\n".join(result_list) return "%s%s" % (line_padding, json_obj) def json_parse(fileobj, decoder=JSONDecoder(), buffersize=2048): buffer = '' for chunk in iter(partial(fileobj.read, buffersize), ''): buffer += chunk while buffer: try: result, index = decoder.raw_decode(buffer) yield result buffer = buffer[index:] except ValueError: # Not enough data to decode, read more break

def转换器（数据）：

f = open(df,'w') data = open(nav) for line in json_parse(data): f.write(dicttoxml.dicttoxml(line, attr_type=False)) f.close() converter(nav)

我是在这样的假设下，iter会把第一行的内容读到下一个。 转换后的输出看起来很棒，但我也很确定在哪里查看如何让它循环到文件中的下一行。

I'm trying to convert a JSON file to XML using a small python script, but for some reason the loop only seems to read the first line of the JSON file.

from xml.dom import minidom from json import JSONDecoder import json import sys import csv import os import re import dicttoxml from datetime import datetime, timedelta from functools import partial reload(sys) sys.setdefaultencoding('utf-8') nav = 'navigation_items.bson.json' df = 'testxmloutput.txt' def json2xml(json_obj, line_padding=""): result_list = list() json_obj_type = type(json_obj) if json_obj_type is list: for sub_elem in json_obj: result_list.append(json2xml(sub_elem, line_padding)) return "\n".join(result_list) if json_obj_type is dict: for tag_name in json_obj: sub_obj = json_obj[tag_name] result_list.append("%s<%s>" % (line_padding, tag_name)) result_list.append(json2xml(sub_obj, "\t" + line_padding)) result_list.append("%s</%s>" % (line_padding, tag_name)) return "\n".join(result_list) return "%s%s" % (line_padding, json_obj) def json_parse(fileobj, decoder=JSONDecoder(), buffersize=2048): buffer = '' for chunk in iter(partial(fileobj.read, buffersize), ''): buffer += chunk while buffer: try: result, index = decoder.raw_decode(buffer) yield result buffer = buffer[index:] except ValueError: # Not enough data to decode, read more break

def converter(data):

f = open(df,'w') data = open(nav) for line in json_parse(data): f.write(dicttoxml.dicttoxml(line, attr_type=False)) f.close() converter(nav)

I was under the assumption that the iter would read the first line to memory and move on to the next. The converted output looks great but im too sure where to look on how to get it to loop through to the next line in file.

最满意答案

尝试使用json.load将文件加载到字典中，然后迭代输出的字典。

import sys import json json_file = sys.argv[1] data = {} with open(json_file) as data_file: data = json.load(data_file) for key in data: #do your things

Try json.load to load the file into a dict and then iterate the dict for your output.

import sys import json json_file = sys.argv[1] data = {} with open(json_file) as data_file: data = json.load(data_file) for key in data: #do your things