Python编程从入门到实践 第10章10.4.3最后一个例子，每次运行结果都需要输入名字，即使每次输入名字都是Eric，也没有出现“Welcome back，Eric！”的运行结果。

问题遇到的现象和发生背景

问题相关代码，请勿粘贴截图

import json

def get_stored_username():
    """如果存储了用户名，就获取它"""
    filename = 'userneme.json'
    try:
        with open(filename) as f_obj:
            username = json.load(f_obj)
    except FileNotFoundError:
        return None
    else:
        return username

def get_new_username():
    """提示用户输入用户名"""
    username = input("What is your name?")
    filename = 'username.json'
    with open(filename, 'w') as f_obj:
        json.dump(username, f_obj)
    return username

def greet_user():
    """问候用户，并指出其名字"""
    username = get_stored_username()
    if username:
        print("Welcome back, " + username + "!")
    else:
        username = get_new_username()
        print("We'll remember you when you come back, " + username + "!")
greet_user()

运行结果及报错内容

PS C:\Users\XXXXX> & C:/Python39/python.exe c:/Users/yongwei.wang/Desktop/PythonEX/remember_me.py
What is your name?Eric
We'll remember you when you come back, Eric!
PS C:\Users\XXXXX>& C:/Python39/python.exe c:/Users/yongwei.wang/Desktop/PythonEX/remember_me.py
What is your name?Eric
We'll remember you when you come back, Eric!

我的解答思路和尝试过的方法

我想要达到的结果

运行两次，第一次输入Eric 得到结果“We'll remember you when you come back, Eric!”
第二次得到结果“Welcome back，Eric!"

这里写错了
def get_stored_username():
filename = 'userneme.json'

应该是username，不是neme吧，所以没找到保存名字的文件