python list转josn,以及读写txt、json文件
python list转josn,以及读写txt、json文件
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# -*- coding: utf-8 -*-
from csv import list_dialects
import json,random
# list 转成Json格式数据
# def listToJson(lst):
# import json
# import numpy as np
# keys = [str(x) for x in np.arange(len(lst))]
# list_json = dict(zip(keys, lst))
# str_json = json.dumps(list_json, indent=2, ensure_ascii=False) # json转为string
# return list_json
def listToJson(lst):
import json
import numpy as np
keys = [str(x) for x in np.arange(len(lst))]
list_json = dict(zip(keys, lst))
str_json = json.dumps(list_json, indent=2, ensure_ascii=False) # json转为string
return list_json
import numpy as np
a = np.arange(len("123456"))
a = listToJson(['s','d','f'])
josn1 = '''
[
{
"fields": {
"category_name": "",
"image_url": [
"",
""
],
"description": "",
"brand_name": "",
"thumbnail_url": [
"",
""
],
"title": "",
"is_onsale": 72,
"url": "",
"brand_id": "",
"series_id": "",
"sold_num": 97,
"category_id": 90,
"onsale_time": 60,
"price": 2040469.9542079207,
"series_name": "",
"is_promotion": 11,
"id": "0",
"seller_id": "",
"status": ""
},
"cmd": "ADD"
}
]
'''
f2=open(r"D:\test\0331\0331e.txt",'r',encoding= 'UTF-8')
list_a = []
list_all = []
for i in f2.readlines():
##########这句话必须写在循环里面,不然会导致最后的list的每条数据都是最后一个
myfriend = json.loads(josn1) # json转化字典对象
###########
print(i) #其实是一个一个字符进行遍历的,每行结尾有一个换行符,所以进行了换行
print(i.split('\t')) #数据中有\t分隔符(就是空格),可以通过这个来分割数据
i_split = i.split('\t')
# list_a.append(i.split('\t'))
myfriend[0]["fields"]["id"] = i_split[0]
myfriend[0]["fields"]["title"] = i_split[1]
myfriend[0]["fields"]["is_onsale"] = random.randint(0,1)
myfriend[0]["fields"]["sold_num"] = random.randint(0,999)
myfriend[0]["fields"]["onsale_time"] = random.randint(1641015051,1648704651)
myfriend[0]["fields"]["price"] = round(random.uniform(0, 999),2)
myfriend[0]["fields"]["status"] = str(random.randint(0,1))
list_a.append(myfriend[0])
print(i.split('\t'))
print(type(f2.read()))
print(f2.read())
print(list_a)
print(f2.read())
# ensure_ascii=False,用于确保写入json的中文不发生乱码
with open(r"D:\test\0331\03312.json","w",encoding= "UTF-8") as f:
# ensure_ascii=False,用于确保写入json的中文不发生乱码
json.dump(list_a,f,ensure_ascii=False)
print("加载入文件完成...")
# a = 1
# print(int(1/2))
print(a)
print(a)
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