彩票随机数python (python多组随机数)

Python定义了一组用于生成或操纵随机数的函数。这种特殊类型的功能用于许多游戏，彩票或需要随机数生成的任何应用程序中。

随机数运算：

1.choice()：此函数用于从容器生成1个随机数。

2.randrange(beg, end, step)：此函数用于在其参数指定的范围内生成随机数。此函数有3个参数，开始编号（包含在生成中），最后一个编号（不包含在生成中）和step（在选择时跳过范围内的数字）。

# Python code to demonstrate the working of 
# choice() and randrange() 
   
# importing "random" for random operations 
import random 
  
# using choice() to generate a random number from a  
# given list of numbers. 
print ("A random number from list is : ",end="") 
print (random.choice([1, 4, 8, 10, 3])) 
  
# using randrange() to generate in range from 20 
# to 50. The last parameter 3 is step size to skip 
# three numbers when selecting. 
print ("A random number from range is : ",end="") 
print (random.randrange(20, 50, 3)) 

输出：

A random number from list is : 4
A random number from range is : 41

3.random() ：此数字用于生成小于1且大于或等于0的float随机数。

4.seed()：此函数使用提到的seed参数映射特定的随机数。在种子值之后调用的所有随机数都返回映射的数字。

# Python code to demonstrate the working of 
# random() and seed() 
   
# importing "random" for random operations 
import random 
  
# using random() to generate a random number 
# between 0 and 1 
print ("A random number between 0 and 1 is : ", end="") 
print (random.random()) 
  
# using seed() to seed a random number 
random.seed(5) 
  
# printing mapped random number 
print ("The mapped random number with 5 is : ", end="") 
print (random.random()) 
  
# using seed() to seed different random number 
random.seed(7) 
  
# printing mapped random number 
print ("The mapped random number with 7 is : ", end="") 
print (random.random()) 
  
# using seed() to seed to 5 again 
random.seed(5) 
  
# printing mapped random number 
print ("The mapped random number with 5 is : ",end="") 
print (random.random()) 
  
# using seed() to seed to 7 again  
random.seed(7) 
  
# printing mapped random number 
print ("The mapped random number with 7 is : ",end="") 
print (random.random()) 

输出：

A random number between 0 and 1 is : 0.510721762520941
The mapped random number with 5 is : 0.6229016948897019
The mapped random number with 7 is : 0.32383276483316237
The mapped random number with 5 is : 0.6229016948897019
The mapped random number with 7 is : 0.32383276483316237

5.shuffle()：此函数用于随机排列整个列表。

6.uniform(a, b) ：此函数用于在其参数中提到的数字之间生成浮点随机数。它包含两个参数：下限（包含在生成中）和上限（不包含在生成中）。

# Python code to demonstrate the working of 
# shuffle() and uniform() 
   
# importing "random" for random operations 
import random 
  
# Initializing list  
li = [1, 4, 5, 10, 2] 
  
# Printing list before shuffling 
print ("The list before shuffling is : ", end="") 
for i in range(0, len(li)): 
    print (li[i], end=" ") 
print("\r") 
  
# using shuffle() to shuffle the list 
random.shuffle(li) 
  
# Printing list after shuffling 
print ("The list after shuffling is : ", end="") 
for i in range(0, len(li)): 
    print (li[i], end=" ") 
print("\r") 
  
# using uniform() to generate random floating number in range 
# prints number between 5 and 10 
print ("The random floating point number between 5 and 10 is : ",end="") 
print (random.uniform(5,10)) 

输出：

The list before shuffling is : 1 4 5 10 2 
The list after shuffling is : 2 1 4 5 10 
The random floating point number between 5 and 10 is : 5.183697823553464