求大神帮助,小弟目前是自学状态。
第一次遇到这种报错。
源代码:
import json
def get_stored_username():
filename = 'username.json'
try:
with open(filename) as file_object:
username = json.load(file_object)
except FileNotFoundError:
return None
else:
return username
def greet_user():
username = get_stored_username()
if uesrname:
print(f"Welcome come back {username}!")
else:
uesrname = input("What is your name?")
filename = 'username.json'
with open(filename,"w") as file_object:
json.dump(username,file_object)
print(f"We'll rember you when you come back {username}!")
greet_user()
报错:
Traceback (most recent call last):
File "C:\Users\yaojianxin\Desktop\study\3、python_work\remember_me.py", line 57, in <module>
greet_user()
File "C:\Users\yaojianxin\Desktop\study\3、python_work\remember_me.py", line 49, in greet_user
if uesrname:
UnboundLocalError: local variable 'uesrname' referenced before assignment
这个问题是哪里出了问题?应该如何解决?