Python --- random module Usage Details, python --- random

Python --- random module Usage Details, python --- random
Common Methods of random modules related to random operations:

Random () --- return 0-1 to see a random floating point number.

Call: random. random ()

For example:

>>> random.random()0.027383887147843344>>> random.random()0.5061348573341105>>> random.random()0.015448646863463922

Randint () --- returns a random integer.

Call: random. randint (a, B) (a <= B) returns the random number n, a <= n <= B

For example:

>>> random.randint(1, 10)6>>> random.randint(1, 10)3>>> random.randint(1, 10)7>>> random.randint(1, 10)8>>> random.randint(1, 10)9>>> random.randint(1, 10)9

Randrange () --- returns a random integer.

Call: random. randrange ([start], stop [, step]) to obtain a random value (the maximum value of this random value is stop-1) from the specified range according to the specified incremental count ),

For example, random. randrange (1, 10, 2) obtains a random number from [1, 3, 5, 7, 9 ].

>>> random.randrange(1,10, 2)3>>> random.randrange(1,10, 2)5>>> random.randrange(1,10, 2)7>>> random.randrange(1,10, 2)5>>> random.randrange(1,10, 2)3>>> random.randrange(1,10, 2)7

Choice () --- randomly obtain an element from a sequence.

Call: random. choice (sequence) (sequence refers to ordered sequence)

For example:

>>> random.choice([1,2,3,4,5,6])2>>> random.choice([1,2,3,4,5,6])3>>> random.choice([1,2,3,4,5,6])4>>> random.choice([1,2,3,4,5,6])4>>> random.choice([1,2,3,4,5,6])6>>> random.choice('hello word!')'d'>>> random.choice('hello word!')'w'>>> random.choice('hello word!')'r'>>> random.choice('hello word!')'o'>>> random.choice('hello word!')'o'>>> random.choice('hello word!')'l'>>> random.choice('hello word!')'!'

Sample () --- obtain the random value of the specified number from a sequence.

Call: random. sample (sequence, n)

For example:

>>> random.sample([1,2,3,4,5,6], 3)[4, 3, 2]>>> random.sample([1,2,3,4,5,6], 3)[3, 2, 6]>>> random.sample([1,2,3,4,5,6], 3)[3, 4, 5]>>> random.sample("hello world!", 3)['l', 'o', 'r']>>> random.sample("hello world!", 3)['!', 'd', 'e']>>> random.sample(("hello world!"), 3)['l', 'e', 'l']>>> random.sample(("hello world!"), 3)['l', 'o', 'w']>>> random.sample(("hello world!"), 3)['l', 'd', 'o']