Analyzing examples to explain what is the Python random module

This article mainly introduces the usage of Python random module with examples. The random module in Python is used to generate random numbers. Here are some of the most commonly used functions in Python random module

random.random

##random.random( ) is used to generate a random symbol number from 0 to 1: 0

random.uniform
The function prototype of random.uniform is: random.uniform(a, b), which is used to generate a random number of character points within a specified range. One of the two parameters is the upper limit and the other is the lower limit. . If a > b, the generated random number n: a

print random.uniform(10,20)  
print random.uniform(20,10)  
#---- 结果（不同机器上的结果不一样）  
#18.7356606526  
#12.5798298022

random.randint

##The function prototype of random.randint() is: random.randint(a, b), used to generate an integer within a specified range. Among them, parameter a is the lower limit, parameter b is the upper limit, and the generated random number n: a

##

print random.randint(12,20)  #生成的随机数n: 12 <= n <= 20  
print random.randint(20,20)  #结果永远是20  
#print random.randint(20, 10)   #该语句是错误的。下限必须小于上限。

The above methods are the most commonly used in the random module. In the Python manual, other methods are also introduced. Interested friends can learn more detailed information by consulting the Python manual.

Put an example below:

import random  
result = random.random()  
print result　　　#生成0-1的随机数  
  
print random.uniform(10,12)  #10-12的随机数  
  
print random.randint(30,50)　　#30-50的随机整数　  
  
print random.randrange(10,100,2) #从10开始到100结束，步长为2的序列中，随机选一个  
  
list = [1,2,5,6,7,8,8]  
print random.choice(list)   #从序列中随机选一个  
  
  
  
random.shuffle(list)     #重新排列序列  
print list  
  
list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]     
slice = random.sample(list, 5)   #从序列中取样  
print slice

结果：

0.782366976492
11.5582702631
42
88
7
[1, 5, 8, 6, 7, 2, 8]
[10, 2, 9, 7, 8]

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