摘要：for循环 break终止循环 a = 'abcd' for i in a: ... if i == 'c': ... print("'c' stands for 'cease'") ... break ... print(i) ... a b 'c' stands for 'cease' cont 阅读全文

摘要：字典 形式 dict_name = {key1:value1,key2,value2,...} 空字典：dict_name = {} or dict_name = dict() 字典的相关操作 增： dict_name[key] = value, 若键存在则修改对应的值，若键不存在则在尾部创建键值对 阅读全文