Random module and pythonrandom Module

Random module and pythonrandom Module

The random module in Python is used to generate random numbers. Common functions are used as follows:

Random. randint

Function prototype: random. randint (a, B), which generates a randomIntegerN, where a <= n <= B

Random. uniform

Function prototype: random. uniform (a, B), which generates a randomFloating Point NumberN, where a <= n <= B

Random. random

Function prototype: random. random (), which generates a random value between 0 and 1.Floating Point NumberN, where 0 <= n <1

Random. choice

Function prototype: random. choice (sequence). Obtain a random element from the sequence (list, tuple, string ...).

Example: random string Extraction

>>> Import random
>>> Random. choice (["apple", "orange", "egg"])
'Egg'

 

Random. randrange

Function prototype: random. randrange ([start], stop [, step]), which obtains a random number from the set in which the specified base number increments.

For example, an even number between 0 and 100 is randomly obtained.

>>> Import random
>>> Random. randrange (0,101, 2)
38

 

Random. sample

Function prototype: random. sample (sequence, k), which randomly retrieves fragments of the specified length from the specified sequence

Example: select a specific number of characters in the string, and randomly obtain four elements in the list as a part.

>>> Import random
>>> Random. sample ("goodboy", 2)
['D', 'O']
>>> Random. sample (["I", "love", 3, "python", 66], 4)
['Python', 'love', 'I', 3]

 

Random. shuffle

Function prototype: random. shuffle (x [, random ]).

Example: shuffling

>>> Import random
>>> Cards = [1, 2, 3, 4, 5, 6]
>>> Random. shuffle (cards)
>>> Cards
[3, 5, 2, 4, 6, 1]