摘要：
""" 数据类型 """ # # # int # num1 = 1 # # float # num2 =1.1 # print(type(num1)) # print(type(num2)) # # # str ,字符串，特点：数据都带引号，单引、双引均可 # a = 'hello world' # 阅读全文
摘要：
https://www.bilibili.com/read/cv12103468/ http://www.javatiku.cn/pycharm/66.html 阅读全文