from os import write


print("===========================序列化-反序列化===============================")
#暫時(shí)這么理解

#序列化：將數(shù)據(jù)從內(nèi)存持久化保存到硬盤的過程
#反序列化：將數(shù)據(jù)從硬盤加載到內(nèi)存的過程

#write時(shí),只能寫入字符串或者二進(jìn)制
#字典 列表 數(shù)字 等都不能直接寫入到文件當(dāng)中

#1將數(shù)據(jù)轉(zhuǎn)換成字符串：repr / str
#2將數(shù)據(jù)轉(zhuǎn)換成二進(jìn)制
#3將數(shù)據(jù)轉(zhuǎn)換成 Json:本質(zhì)是字符串

file = open("Pfile/Pfile13.txt","w",encoding="utf8")
file.write("nihao caonima de ")
names = ["張","找","曹操","給車","算法","算法","兒童","兒童"]
file.write(names.__repr__())
file.write(str(names))
file.close()


#json里將數(shù)據(jù)持久化有2個(gè)方法：
#dumps:將數(shù)據(jù)轉(zhuǎn)換成為json字符串，不會將數(shù)據(jù)保存到文件里
#dump:將數(shù)據(jù)轉(zhuǎn)換成為json字符串，會將數(shù)據(jù)保存到文件里

import json
file = open("Pfile/Pfile14-json.txt","w",encoding="utf8")
names = ["json","Hello","gg","hh","jj","kk","ll","ii"]
x = json.dumps(names) #dumps:將數(shù)據(jù)轉(zhuǎn)換成字符串,不會將數(shù)據(jù)保存到文件里
file.write(x)          #手動寫入文件
print(x)
file.close()


file = open("Pfile/Pfile15-json.txt","w",encoding="utf8")
names = ["json","Hello","gg"]
x = json.dump(names,file) #dumps:將數(shù)據(jù)轉(zhuǎn)換成字符串,會將數(shù)據(jù)保存到文件里,自動寫入文件
file.close()

#json里將數(shù)據(jù)反序列化有2個(gè)方法：
#loads:將json字符串加載成為Python里的數(shù)據(jù)
#load:讀取文件徽诲，把讀取的內(nèi)容加載成為Python里的數(shù)據(jù)

xx = '{"name":"world","good":"bad","love":90}'
p = json.loads(xx)   #loads:將json字符串加載成為Python里的數(shù)據(jù)
print(p["name"])

file = open("Pfile/Pfile15-json.txt","r",encoding="utf8")
yy = json.load(file)  #load:讀取文件轴咱，把讀取的內(nèi)容加載成為Python里的數(shù)據(jù)
print(yy)
print(yy[0])


print("===========================Pickle模塊使用===============================")
#json:將Python里的數(shù)據(jù)（str/list/tuple/dict/int/float/bool/None）等轉(zhuǎn)化為對應(yīng)的Json字符串
#pickle:將Python里任意的對象轉(zhuǎn)換為二進(jìn)制

import pickle

#序列化  dumps:轉(zhuǎn)化成二進(jìn)制   dump：轉(zhuǎn)化成二進(jìn)制并寫入到文件
#反序列化 loads：將二進(jìn)制轉(zhuǎn)化成為Python數(shù)據(jù)   load：讀取文件二進(jìn)制數(shù)據(jù)轉(zhuǎn)化成為python


names = ["諸葛亮","json","Hello","gg","你好"]

#dumps 
file = open("Pfile/Pfile16-pickle.txt","wb")
b_names = pickle.dumps(names)
file.write(b_names) #寫入的是二進(jìn)制
file.close()

#dump
file = open("Pfile/Pfile16-pickle.txt","wb")
pickle.dump(names,file)
file.close()


#loads 
file = open("Pfile/Pfile16-pickle.txt","rb")
x = file.read()
y = pickle.loads(x)
print(y)
file.close()

#load
file = open("Pfile/Pfile16-pickle.txt","rb")
y = pickle.load(file)
file.close()
print(y)


print("===========================Pickle 與 json區(qū)別===============================")
#pickle 用來將數(shù)據(jù)原封不動的轉(zhuǎn)換成為二進(jìn)制，只能用Python讀  不能跨平臺
#json 只能保存部分?jǐn)?shù)據(jù)（基本數(shù)據(jù)類型）畸颅，用在不同平臺傳輸數(shù)據(jù)，夸平臺