摘要：
# -*- coding: utf-8 -*- def get_text():txt = open("1.txt", "r", encoding='UTF-8').read()txt = txt.lower()for ch in '!"#$%&()*+,-./:;<=>?@[\\]^_‘{|}~': 阅读全文
摘要：
import turtle class Stack: def __init__(self): self.items = [] def isEmpty(self): return len(self.items) == 0 def push(self, item): self.items.append( 阅读全文