{"id":100689,"date":"2021-03-15T11:00:00","date_gmt":"2021-03-15T09:00:00","guid":{"rendered":"https:\/\/examples.javacodegeeks.com\/?p=100689"},"modified":"2022-02-24T12:05:48","modified_gmt":"2022-02-24T10:05:48","slug":"python-random-module-tutorial","status":"publish","type":"post","link":"https:\/\/examples.javacodegeeks.com\/python-random-module-tutorial\/","title":{"rendered":"Python Random Module Tutorial"},"content":{"rendered":"

Hello in this tutorial, we will understand how to use the random<\/code> module in python programming.<\/p>\n

1. Introduction<\/h2>\n

The random<\/code> module in python programming is used to generate random numbers for various purposes. The random number generated can be an integer or float. This module provides a different set of methods and in this tutorial, we will study and implement some of them.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Method<\/strong><\/th>\nDescription<\/strong><\/th>\n<\/tr>\n<\/thead>\n
randint(minimum, maximum)<\/code><\/td>\nGenerates a random integer between the given min and max integers<\/td>\n<\/tr>\n
randrange(beg, end, step)<\/code><\/td>\nReturns a randomly selected element from the range created by the beginning, ending, and step arguments. The default value is beginning is 0 and step is 1<\/td>\n<\/tr>\n
choice(sequence)<\/code><\/td>\nGenerates a randomly selected element from a non-empty sequence. If the sequence is empty IndexError is thrown by the python compiler<\/td>\n<\/tr>\n
seed(seed_value)<\/code><\/td>\nInitialize the random number generator with a seed value. Returns the mapper<\/td>\n<\/tr>\n
shuffle(number_list)<\/code><\/td>\nRandomly reorders the elements in a list<\/td>\n<\/tr>\n
sample(type, x)<\/code><\/td>\nReturns an X sized random samples from a type such as a list or set<\/td>\n<\/tr>\n
uniform(beg, end)<\/code><\/td>\nReturns a random floating-point number within a range<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

1.1 What Is Cryptographically Secure?<\/h3>\n

The random numbers generated by the random<\/code> module in python programming is not cryptographically secure. The securely generated random numbers use the synchronization methods to ensure that no two processes can obtain the same data simultaneously. In python 3.x you can use the secrets<\/code> module to generate secure random numbers.

<\/div> <\/div><\/p>\n

1.2 Setting up Python<\/h3>\n

If someone needs to go through the Python installation on Windows, please watch this<\/a> link. You can download the Python from this<\/a> link.<\/p>\n

2. Python Random Module Tutorial<\/h2>\n

I am using JetBrains PyCharm<\/a> as my preferred IDE. You are free to choose the IDE of your choice. Let us dive in with the programming stuff now.<\/p>\n

2.1 Python Random Module Tutorial<\/h3>\n

Let us understand the different use cases of the random<\/code> module in python programming.<\/p>\n

random module<\/em><\/span><\/p>\n

# python random tutorial\nimport random\n# generate random integers\n# randint() method generates a random integer between the given min and max integers\ndef random_integer(minimum, maximum):\n    rand_number = random.randint(minimum, maximum)\n    print(\"Random integer number is = {}\".format(rand_number))\n# generate random floats\n# random() method generates a random floating number between 0.0 to 1.0\ndef random_float():\n    rand_number = random.random()\n    print(\"Random float number is = {}\".format(rand_number))\n# generate random number within range\n# randrange() method generates a randomly selected element from the range created by the\n# beginning, ending, and step arguments\n# default value is beginning is 0 and step is 1\ndef random_range(beg, end, step):\n    rand_number = random.randrange(beg, end, step)\n    print(\"Random number from range is = {}\".format(rand_number))\n# select random elements\n# choice() method generates a randomly selected element from a non-empty sequence\n# if sequence is empty -> IndexError is thrown by the python compiler\ndef random_choice(sequence):\n    rand_number = random.choice(sequence)\n    print(\"Random number from sequence is = {}\".format(rand_number))\n# shuffle elements\n# shuffle() method randomly reorders the elements in a list\ndef random_shuffle(number_list):\n    random.shuffle(number_list)\n    print(\"Randomly reordered = {}\".format(number_list))\n# driver code\nif __name__ == \"__main__\":\n    print(\"==== Python Random Tutorial ====\")\n    print(\"\\n\")\n    random_integer(10, 50)\n    print(\"\\n\")\n    random_float()\n    print(\"\\n\")\n    random_range(5, 10, 2)\n    print(\"\\n\")\n    random_choice([5, 10, 15, 20, 25])\n    print(\"\\n\")\n    random_choice('python')\n    print(\"\\n\")\n    random_shuffle([15, 20, 25, 30, 35, 50, 100])\n<\/pre>\n
If everything goes well the following output will be shown in the IDE console.<\/p>\n
Console Output<\/em><\/span><\/p>\n
==== Python Random Tutorial ====\nRandom integer number is = 47\nRandom float number is = 0.0019020537095424395\nRandom number from range is = 5\nRandom number from sequence is = 5\nRandom number from sequence is = o\nRandomly reordered = [30, 100, 35, 25, 20, 15, 50]\n<\/pre>\n
That is all for this tutorial and I hope the article served you with whatever you were looking for. Happy Learning and do not forget to share!<\/p>\n
3. Summary<\/h2>\n
In this tutorial, we learned:<\/p>\n