print ("abs(-40) : ", abs(-40))

print ("abs(100.10) : ", abs(100.10))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.ceil(-45.17) : ", math.ceil(-45.17))

print ("math.ceil(100.12) : ", math.ceil(100.12))

print ("math.ceil(100.72) : ", math.ceil(100.72))

print ("math.ceil(math.pi) : ", math.ceil(math.pi))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.exp(-45.17) : ", math.exp(-45.17))

print ("math.exp(100.12) : ", math.exp(100.12))

print ("math.exp(100.72) : ", math.exp(100.72))

print ("math.exp(math.pi) : ", math.exp(math.pi))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.fabs(-45.17) : ", math.fabs(-45.17))

print ("math.fabs(100.12) : ", math.fabs(100.12))

print ("math.fabs(100.72) : ", math.fabs(100.72))

print ("math.fabs(math.pi) : ", math.fabs(math.pi))

#!/usr/bin/python

import math   # 导入 math 模块

print ("math.floor(-45.17) : ", math.floor(-45.17))

print ("math.floor(100.12) : ", math.floor(100.12))

print ("math.floor(100.72) : ", math.floor(100.72))

print ("math.floor(math.pi) : ", math.floor(math.pi))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.log(100.12) : ", math.log(100.12))

print ("math.log(100.72) : ", math.log(100.72))

print ("math.log(math.pi) : ", math.log(math.pi))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.log10(100.12) : ", math.log10(100.12))

print ("math.log10(100.72) : ", math.log10(100.72))

print ("math.log10(119) : ", math.log10(119))

print ("math.log10(math.pi) : ", math.log10(math.pi))

#!/usr/bin/python3

print ("max(80, 100, 1000) : ", max(80, 100, 1000))

print ("max(-20, 100, 400) : ", max(-20, 100, 400))

print ("max(-80, -20, -10) : ", max(-80, -20, -10))

print ("max(0, 100, -400) : ", max(0, 100, -400))

#!/usr/bin/python3

print ("min(80, 100, 1000) : ", min(80, 100, 1000))

print ("min(-20, 100, 400) : ", min(-20, 100, 400))

print ("min(-80, -20, -10) : ", min(-80, -20, -10))

print ("min(0, 100, -400) : ", min(0, 100, -400))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.modf(100.12) : ", math.modf(100.12))

print ("math.modf(100.72) : ", math.modf(100.72))

print ("math.modf(119) : ", math.modf(119))

print ("math.modf(math.pi) : ", math.modf(math.pi))

#!/usr/bin/python3

print ("round(70.23456) : ", round(70.23456))

print ("round(56.659,1) : ", round(56.659,1))

print ("round(80.264, 2) : ", round(80.264, 2))

print ("round(100.000056, 3) : ", round(100.000056, 3))

print ("round(-100.000056, 3) : ", round(-100.000056, 3))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.pow(100, 2) : ", math.pow(100, 2))

# 使用内置，查看输出结果区别

print ("pow(100, 2) : ", pow(100, 2))

print ("math.pow(100, -2) : ", math.pow(100, -2))

print ("math.pow(2, 4) : ", math.pow(2, 4))

print ("math.pow(3, 0) : ", math.pow(3, 0))

#!/usr/bin/python3

import math   # 导入 math 模块

print ("math.sqrt(100) : ", math.sqrt(100))

print ("math.sqrt(7) : ", math.sqrt(7))

print ("math.sqrt(math.pi) : ", math.sqrt(math.pi))

#!/usr/bin/python3

import random

print ("从 range(100) 返回一个随机数 : ",random.choice(range(100)))

print ("从列表中 [1, 2, 3, 5, 9]) 返回一个随机元素 : ", random.choice([1, 2, 3, 5, 9]))

print ("从字符串中 'Runoob' 返回一个随机字符 : ", random.choice('Runoob'))

#!/usr/bin/python3

#!/usr/bin/python3

import random

# 从 1-100 中选取一个奇数

print ("randrange(1,100, 2) : ", random.randrange(1, 100, 2))

# 从 0-99 选取一个随机数

print ("randrange(100) : ", random.randrange(100))

#!/usr/bin/python3

import random

# 第一个随机数

print ("random() : ", random.random())

# 第二个随机数

print ("random() : ", random.random())

#!/usr/bin/python3

import random

random.seed()

print ("使用默认种子生成随机数：", random.random())

random.seed(10)

print ("使用整数种子生成随机数：", random.random())

random.seed("hello",2)

print ("使用字符串种子生成随机数：", random.random())

#!/usr/bin/python3

import random

list = [20, 16, 10, 5];

random.shuffle(list)

print ("随机排序列表 : ",  list)

random.shuffle(list)

print ("随机排序列表 : ",  list)

#!/usr/bin/python3

import random

print ("uniform(5, 10) 的随机浮点数 : ",  random.uniform(5, 10))

print ("uniform(7, 14) 的随机浮点数 : ",  random.uniform(7, 14))

#!/usr/bin/python3

import math

print ("acos(0.64) : ",  math.acos(0.64))

print ("acos(0) : ",  math.acos(0))

print ("acos(-1) : ",  math.acos(-1))

print ("acos(1) : ",  math.acos(1))

#!/usr/bin/python3

import math

print ("asin(0.64) : ",  math.asin(0.64))

print ("asin(0) : ",  math.asin(0))

print ("asin(-1) : ",  math.asin(-1))

print ("asin(1) : ",  math.asin(1))

#!/usr/bin/python3

import math

print ("atan(0.64) : ",  math.atan(0.64))

print ("atan(0) : ",  math.atan(0))

print ("atan(10) : ",  math.atan(10))

print ("atan(-1) : ",  math.atan(-1))

print ("atan(1) : ",  math.atan(1))

#!/usr/bin/python3

import math

print ("atan2(-0.50,-0.50) : ",  math.atan2(-0.50,-0.50))

print ("atan2(0.50,0.50) : ",  math.atan2(0.50,0.50))

print ("atan2(5,5) : ",  math.atan2(5,5))

print ("atan2(-10,10) : ",  math.atan2(-10,10))

print ("atan2(10,20) : ",  math.atan2(10,20))

#!/usr/bin/python3

import math

print ("cos(3) : ",  math.cos(3))

print ("cos(-3) : ",  math.cos(-3))

print ("cos(0) : ",  math.cos(0))

print ("cos(math.pi) : ",  math.cos(math.pi))

print ("cos(2*math.pi) : ",  math.cos(2*math.pi))

#!/usr/bin/python3

import math

print ("hypot(3, 2) : ",  math.hypot(3, 2))

print ("hypot(-3, 3) : ",  math.hypot(-3, 3))

print ("hypot(0, 2) : ",  math.hypot(0, 2))

#!/usr/bin/python3

import math

print ("sin(3) : ",  math.sin(3))

print ("sin(-3) : ",  math.sin(-3))

print ("sin(0) : ",  math.sin(0))

print ("sin(math.pi) : ",  math.sin(math.pi))

print ("sin(math.pi/2) : ",  math.sin(math.pi/2))

#!/usr/bin/python3

import math

print ("(tan(3) : ",  math.tan(3))

print ("tan(-3) : ",  math.tan(-3))

print ("tan(0) : ",  math.tan(0))

print ("tan(math.pi) : ",  math.tan(math.pi))

print ("tan(math.pi/2) : ",  math.tan(math.pi/2))

print ("tan(math.pi/4) : ",  math.tan(math.pi/4))

#!/usr/bin/python3

import math

print ("degrees(3) : ",  math.degrees(3))

print ("degrees(-3) : ",  math.degrees(-3))

print ("degrees(0) : ",  math.degrees(0))

print ("degrees(math.pi) : ",  math.degrees(math.pi))

print ("degrees(math.pi/2) : ",  math.degrees(math.pi/2))

print ("degrees(math.pi/4) : ",  math.degrees(math.pi/4))

#!/usr/bin/python3

import math

print ("radians(3) : ",  math.radians(3))

print ("radians(-3) : ",  math.radians(-3))

print ("radians(0) : ",  math.radians(0))

print ("radians(math.pi) : ",  math.radians(math.pi))

print ("radians(math.pi/2) : ",  math.radians(math.pi/2))

print ("radians(math.pi/4) : ",  math.radians(math.pi/4))