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python1、定义变量变量即为名字，标识符的命名规范合法的标识符:字母，数字(不能开头),下划线，py3可以用中文（不建议），py2不可以。大小写敏感。不能使用关键字和保留字。 关键字：if while for as import 保留字：input，print range \ 数据类型1、整形 2、浮点型 3、字符串 4、布尔型 5、None 6、列表 元组 字典 集合 数...
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