Python基础学习（一）

import math,cmath#x = input("the meaning of life:")#获取用户输入print(x)print(2**3)print(pow(2,3))#幂运算print(abs(-10))#取绝对值print(round(3.6))#四舍五入取整print(math.floor(3.6))#向下取整print(math.ceil(3.6))#向上取整foo = math.sqrtprint(foo(4))print(cmath.sqrt(-1))#复数运算要引入cmath包x = (1+3j) * (9+4j)print(x)name = input("whats your name? ")print("hello "+ name +"!")print("hello,\world")#原始字符串对于反斜线不会特殊对待。#两个反斜线对其本身进行转义，字符串最后一个字符不能是反斜线，除非对反斜线进行转义，不然python不清楚是否应该结束字符串path = "C:\\program files\\fnord\\foo\\bar\\frozz"path2 = r"C:\program files\fnord\foo\bar\frozz"print(path2)