在循环

Question

我想在询问用户时再次运行程序：＆＃34;您是否想再次运行该程序＆＃34;。不会退出，并且循环并再次运行main。但是我注意到python保存了旧的变量赋值。是否有一种快速清除内存的方法，以便在程序循环时再次存储新变量？

目前我刚刚得到：请关闭程序并重新打开它！想让它更优雅：

这是我到目前为止所得到的：

def main()
    print("Do you want to solve another problem?")
    answer = input()
    while answer not in["yes","no"]:
        answer = input()

    if answer == "yes":
        print("Please close the program and rerun it")
        #main() #<-this is not working as expected
    else:
        exit()

Answer 1

您可以做的一件事是本地化变量并具有清理功能来处理启动新会话。

def machstat():
dbi = mdb.connect("localhost", port=3306, user="access", passwd="password", db="database")
cursor = dbi.cursor()

cursor.execute("""SELECT operation FROM status WHERE mach1='down' """)
stat = cursor.fetchone()
for stat  #THIS WHERE I NEED HELP

   if stat == 'down' then root.after(2000, machstat)
else  (AFTER PROCESS STOP)
   for results in stat:
        List.insert("end", results)

区别在于def main() print("Do you want to solve another problem?") answer = input() while answer not in["yes","no"]: answer = input() if answer == "yes": answer = None print("Please close the program and rerun it") #main() #<-this is not working as expected else: exit() 会将if answer == 'yes'设置为清除它。