队列&堆栈
# 1、队列:FIFO先进先出 l=[] #入队操作 l.append('first') l.append('second') l.append('third') print(l)#['first', 'second', 'third'] #出队操作 print(l.pop(0))#first print(l.pop(0))#second print(l.pop(0))#third #2、堆栈:LIFO后进先出 l=[] #入栈操作 l.append('first') l.append('second') l.append('third') print(l)#['first', 'second', 'third'] #出队操作 print(l.pop())#third print(l.pop())#second print(l.pop())#first