吴裕雄--天生自然 PYTHON3开发学习：数字(Number)

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))