0x01 运算
- 平方
>>> 2 ** 2 4 - 立方
>>>pow(2,3) 8 - 四次方
>>>pow(2,4) 16 - 整除取整数
>>>5 // 3 1 - 取余
>>>5%3 20x02 字符串
- 单引号 双引号等的特殊字符需要使用转义字符
>>>'this is book ' 'this is book' >>> 'He\'s book' "He's book"0x03 print函数 与 input函数
>>>print(1+1) 2 >>> print('hello\nworld') hello world>>> input('enter something please:') enter something please:good is good 'good is good' - input用法示例（注意input里面的提示语一定要加引号’‘）
>>> word = input(please input something:) File "<stdin>", line 1 word = input(please input something:) ^ SyntaxError: invalid syntax>>> word = input('please input something:') please input something:god >>> x = 'ttt' >>> print(x + word) tttgod
