Python List Trial

import sys

print("\n\tremove add show quit")

#dynamic list
list=[]

#add number
list.append(12)
list.append(18)
list.append(17)

def my_list():
   
    #lowercase write
    s=raw_input("Enter your operation.\n").lower()
   
    if s=="show":        
        print(list)
        my_list()
       
    elif s=='remove':  
       if len(list)==0:
          print("\n list is empty.")
          my_list()
       else:
          print(list)
          x=int(input("enter your number.\n"))
          list.remove(x)
          my_list()
               
    elif s=="add":
          x=int(input("enter your number.\n"))
          list.append(x)
          my_list()    
     
               
    elif s=="quit":
         sys.exit()
               
    else:
         print("\nTry again.")
         my_list()

 
if __name__=="__main__":
    my_list()
 
   

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