NameError：名称“”仅在调试模式下未定义

Question

我写了python脚本，我更改了变量名之一，代码工作正常，但是当我在调试模式下运行它时，我不断获取NameError更改了他的名字的变量，我试图进行“清理”该代码，也确实进行了同步，但仍然会发生。 “时间”被称为“ timeNow”，错误：

Traceback (most recent call last):
 File "C:\Program Files\JetBrains\PyCharm Community Edition 
2017.3.1\helpers\pydev\_pydevd_bundle\pydevd_comm.py", line 1157, in do_it
     result = pydevd_vars.evaluate_expression(self.thread_id, 
self.frame_id, self.expression, self.doExec)
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2017.3.1\helpers\pydev\_pydevd_bundle\pydevd_vars.py", line 345, in evaluate_expression
Exec(expression, updated_globals, frame.f_locals)
File "C:\Program Files\JetBrains\PyCharm Community Edition 2017.3.1\helpers\pydev\_pydevd_bundle\pydevd_exec2.py", line 3, in Exec
exec(exp, global_vars, local_vars)
 File "<string>", line 1, in <module>
NameError: name 'timeNow' is not defined

会导致什么？

from datetime import datetime, timedelta

def print_users(user_dict, days):
  time = datetime.now()
  for key in user_dict:
      if time - timedelta(days=days) > user_dict[key]:
          print(key)

def run():
  users_dict = get_user_dict
  print_users(users_dict, args.days)
  print("Finish")

if __name__ =='__main__':
   run()