Description of the function of the random module in Python

The random function describes the following methods of the random module:

2. betavariate

   get a random floating-point number before range (0,1)

     method: Random.betavariate (Alpha,beta) return value: Float For example: print (Random.betavariate (3,4)) > >> 0.4179835782470355# This method requires two parameters that are greater than 0 to execute, that is, two parameter types need to be numeric types. 

4. choice

   Random get elements of a non-empty sequence

     method: Random.choice (SEQ) return Value: Object For example: print (Random.choice (' abc ')) >>> a# The parameters passed in need to be a sequence or an iterative object  

6. Expovariate

   Random acquisition of 1/n averages to infinity floating-point numbers

   方法：random.expovariate(num)返回值：float例如：print(random.expovariate(100)) >>>　0.002053324332834578＃由于传入的参数是作为1的除数，因此不能是零，可以是正负数。

8. Gammavariate
10. Gauss
12. GetState
14. Lognormvariate
16. Normalvariate
18. Paretovariate

20. Random.randint

    Randomly gets an integer from the specified integer range

    方法：random.randint(start,stop)返回值：int例如：print(random.randint(1,2)) >>> 2#上述取值包含结束的整数

22. randrange

    randomly gets an integer from the specified integer range

      method: Random.randrange (Start,stop=none,step=1) return value: Int for example: print (Random.randrange ( -2,2 ) >>> # This method, when the starting value is positive, you can not specify the end value, the starting value is negative, you must specify the end value, or the program error, the method can also specify the step size. 

24. Sample

    Gets the specified number of random objects from the specified range and returns them as a list

    方法：random.sample(seq,num)返回值：object例如：print(random.sample(‘abc‘,2)) >>> [‘b‘,‘a‘]#上述的num参数必须小于等于seq序列的长度，否则程序报错

26. Seed
28. SetState
30. Shuffle
32. Triangular

34. Uniform

    Gets a random floating-point number from the specified range

    方法：random.uniform(start,stop)返回值：float例如：print(random.uniform(-1,1.1)) >>> -0.5195993353320494#该方法传入的指定范围可以是浮点数，也可以是整数

36. Vonmisesvariate
38. Weibullvariate

40. Random

    Get a random floating-point number in the 0-1 range

    方法：random.random()返回值：float例如：print(random.random()) >>> 0.9014274576114836#该方法不用穿参数。

Description of the function of the random module in Python