Python3.6 module learning random module

Import module

import  random

Dir function to see the use of random function

dir（random）

Commonly used functions have
random.randint

random.randint(1,10)

The meaning of the statement is to produce from 1 to 10 (1 to 10 comprising a) a random number (integer type int). (Parameter is an integer to floating point otherwise it will not be an error)
random.randint (20, 10) # This statement is wrong. It must be less than or equal to the upper limit.

random.random()

random.random()

Generating a floating point number between 0 and 1, including 0 but excluding 1

random.uniform

random.uniform(a,b)

Regardless of size and whether a float

random.uniform(3.65,10.56）#可以这样

random.uniform(10.56, 3.65）#也可以这样

random.choice

random.choice(seq)

random.choice([1, 2, 3, 5, 8, 13])    #列表
random.choice('hello')     #字符串
random.choice(['hello', 'world'])   #字符串组成的列表

random.range()

random.range(start,stop,step)

From start to generate a stop (not including the stop), a random integer interval of the step. start, stop, step must be an integer, and start <stop.

random.sample()

random.sample(p,k)

Sequence from p, k elements randomly acquired, generates a new sequence. sample does not change the original sequence.
This module is 666, also supports triangle, β distribution, exponential distribution, gamma distribution, Gaussian random algorithm and so very professional.

random.shuffle

random.shuffle(x)

Scrambling the order of elements in the sequence x. shuffle directly change the original sequence.