python write a blog using file reading and writing

import random
import json
import time
import os
 
 
def zhuce():
    print("********************* is registering *********************")
    try:
        users = readfile()
    except:
        fa = open(r'', "w",encoding="utf-8")
        (({"Initialization": "Initialization"}))
        ()
        users = readfile()
        ('User information')
    b = 0
    user_name = input("Please enter your user name:")
    user_password = input("Please enter your password:")
    for key in ():
        if user_name == key:
            print("User name already exists")
            b = 1
            break
    if b == 0:
        writefile1(user_name)
        users[user_name] = user_password
        writefile1(user_name)
        writefile(users)
    return b
 
 
def readfile():
    f = open(r'', "r+")
    f1 = (f)
    ()
    return f1
 
 
def writefile(a):
    a = (a)
    f = open(r'', "w")
    (a)
    ()
 
 
def homepage():
    print("********************* twitter homepage *********************")
    a = input("1Register 2Login 3Logout\nPlease enter your choice:")
    return a
 
 
def zhucetexiao():
    print("Registration in progress, please wait!")
    print("Update successful!")
    print("Registration successful!")
    print("Default article table creation complete!")
 
 
def denglu():
    b = 0
    print("********************* is logging on to *********************")
    users = readfile()
    user_name = input("Login User Name:")
    user_password = input("Login Password:")
    for key in ():
        if user_name == key:
            print("User exists. Determining password.")
            b = 2
            if user_password == users[key]:
                print("Landing successful.")
                b = 1
                dengluxiaoguo(user_name)
                break
    if b == 0:
        print("Login failed.")
    return b
 
 
def dengluxiaoguo(user_name):
    while 0 == 0:
        a = input("1 Write article 2 Read all 3 Read one 4 Edit one 5 Delete one 6 Log out \n Please enter your choice:")
        users = article_read(user_name)
        if a == "1":
            print("********************* write an article *********************")
            article_write(user_name)
        elif a == "2":
            duqusuoyou(user_name)
        elif a == "3":
            print("********************* Read an article at *********************")
            duquyipian(user_name)
        elif a == "4":
            print("********************* change an article *********************")
            bianjiyipian(user_name)
        elif a == "5":
            print("********************* delete an article *********************")
            shanchuyipian(user_name)
        elif a == "6":
            break
 
 
def shanchuyipian(user_name):
    duqusuoyou(user_name)
    a = input("Please enter the serial number you want to delete?")
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    if len(f1) > 1:
        if int(a) > 0 and int(a) <= len(f1):
            (a)
            for i in range(1, len(f1) + 2):
                if i > int(a):
                    f1[str(i - 1)] = (str(i))
            f = open(f'user information\{user_name}.json', "w")
            b = (f1)
            (b)
            ()
        else:
            print("Sequence not found.")
    else:
        print("Last post refused to be deleted.")
    duqusuoyou(user_name)
 
 
def bianjiyipian(user_name):
    duqusuoyou(user_name)
    a = input("Please enter the serial number you want to edit?")
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    if int(a) > 0 and int(a) <= len(f1):
        article_name = input("Name of article")
        article_content = input("Article Content")
        f = open(f'user information\{user_name}.json', "r+")
        f1 = (f)
        ()
        f = open(f'user information\{user_name}.json', "w")
        time1 = ("%Y-%m-%d %H:%M:%S", ())
        f1[a] = {"title": article_name, "time": time1, "author": user_name, "content": article_content}
        b = (f1)
        (b)
        ()
    else:
        print("Sequence not found.")
 
 
def duquyipian(user_name):
    duqusuoyou(user_name)
    a = input("Please enter the serial number you wish to view?")
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    if int(a) > 0 and int(a) <= len(f1):
        print(f1[a])
    else:
        print("Sequence not found.")
 
 
def duqusuoyou(user_name):
    print("********************* Article Directory *********************")
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    for key in ():
        print(f"{key} {f1[key]['title']}        {f1[key]['time']}")
 
 
def article_read(user_name):
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    return f1
 
 
def article_write(user_name):
    f = open(f'user information\{user_name}.json', "r+")
    f1 = (f)
    ()
    key_count = len(f1) + 1
    article_name = input("Article Title:")
    article_content = input("Article Content:")
    time1 = ("%Y-%m-%d %H:%M:%S", ())
    f = open(f'user information\{user_name}.json', "w")
    # print(type(key_count))
    f1[str(key_count)] = {"title": article_name, "time": time1, "author": user_name, "content": article_content}
    print(f1)
    b = (f1)
    (b)
    ()
 
 
def readfile1():
    f = open(r'', "r+")
    f1 = (f)
    ()
    return f1
 
 
def writefile1(a):
    time1 = ("%Y-%m-%d %H:%M:%S", ())
    f = open(f'user information\{a}.json', "w")
    b = {1: {"title": "Initializing Articles", "time": time1, "author": "0", "content": "0"}}
    print(b)
    b = (b)
    (b)
    ()
 
 
while 0 == 0:
    h = homepage()
    if h == "1":
        if zhuce() == 0:
            zhucetexiao()
    elif h == "2":
        if denglu() == 1:
            pass
    else:
        exit()