A function that generates random numbers in Python

Reference Blog: http://www.360doc.com/content/14/0430/11/16044571_373443266.shtml

Today I suddenly think of python how to generate random numbers? Check it out, put out the test results.

Import this module first

1.random.random (): Randomly generates a floating-point number, in the range of 0<=x<=1.0

>>> random.random ()0.7802959818148015>>> random.random ()0.328008839087651 >>> random.random ()0.5568708122526114>>> random.random ()0.23048925282509325

2.random.uniform (): randomly generates random floating-point numbers within the specified range.

>>> random.uniform (18,15)  a >b a<b a=b can be 16.01770569291661>>> random.uniform ( 18,15)17.027730377035027>>> random.uniform (10,15)14.682052726572774>>> Random.uniform (10,15)12.997092389884806

3.random.randint (): Randomly selects integers in a range

>>> random.randint (12,14)12>>> random.randint (12,16)14>>> Random.randint (12,16)16

4.random.randrange (): Similar to Randranint (), returns an integer within the range, and Randrange () can specify the step size of the numeric value.

>>> Random.randrange (10,100)97>>> Random.randrange (10,100)#Step default 189>>> Random.randrange (10,100,2)66>>> Random.randrange (10,100,2)52>>> Random.randrange (10,1,2)#The first number must be less than the second numberTraceback (most recent): File"<stdin>", Line 1,inch<module>File"/usr/local/python3.6/lib/python3.6/random.py", Line 212,inchRandrangeRaiseValueError ("Empty range for Randrange ()") Valueerror:empty Range forRandrange ()

5.random.chiose (): Randomly selects an element in a sequence

>>> Random.choice (('Kebi','Maoxina','Xinye'))'Xinye'>>> >>> Random.choice (('Kebi','Maoxina','Xinye'))'Kebi'>>> Random.choice ([1,2,3,4])2>>> Random.choice ([1,2,3,4])2>>> Random.choice ("old boy It education")'Fertility'>>> Random.choice ("old boy It education")'male'

6.random.shuffle (): Disrupts an element in the list

>>> name = ['Kebi','like','Pig']>>>random.shuffle (name)>>>name['like','Pig','Kebi']>>>random.shuffle (name)>>>name['Kebi','like','Pig']>>>random.shuffle (name)>>>name['like','Pig','Kebi']

7.random.sample (): Randomly gets the specified number of elements in a sequence

>>> SS = (1,2,3,4)>>> SST ='Woshishui'>>> Random.sample (ss,2)[2, 4]>>> Random.sample (ss,2)[2, 1]>>> Random.sample (sst,1)['h']>>> Random.sample (sst,4)#not slices, no order.['o','u','I','W']>>> random.sample (name)#quantity must be specifiedTraceback (most recent): File"<stdin>", Line 1,inch<module>typeerror:sample () missing1 Required positional argument:'k'>>> Random.sample (name,2)['Pig','like']>>> Random.sample (name,1)['Pig']

A function that generates random numbers in Python