{"id":4449,"date":"2020-03-29T13:50:45","date_gmt":"2020-03-29T13:50:45","guid":{"rendered":"https:\/\/www.askpython.com\/?p=4449"},"modified":"2022-08-06T13:28:30","modified_gmt":"2022-08-06T13:28:30","slug":"python-randint-method","status":"publish","type":"post","link":"https:\/\/www.askpython.com\/python-modules\/python-randint-method","title":{"rendered":"Generate random integers using Python randint()"},"content":{"rendered":"\n

In this article, we’ll take a look at generating random integers using the Python randint()<\/strong> method.<\/p>\n\n\n\n

This method is in the random module in Python, which we will use to generate pseudo-random<\/strong> numbers, so we’ll need to import it to load this method. Let’s take a look at this method now!<\/p>\n\n\n\n

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Syntax of Python randint()<\/h2>\n\n\n\n

The Python randint() method returns a random integer between two limits lower<\/code> and upper<\/code>(inclusive of both limits). So this random number could also be one of the two limits.<\/p>\n\n\n\n

We can call this function as follows:<\/p>\n\n\n

\nrandom_integer = random.randint(lower, upper)\n<\/pre><\/div>\n\n\n
Here, lower<\/strong> is the lower limit of the random number, and upper<\/strong> is the upper limit of the random number.<\/p>\n\n\n\n
We must ensure that lower<\/code> and upper<\/code> are integers, and that lower<\/code> <= upper<\/code>. Otherwise, a ValueError<\/code> Exception will be raised.<\/p>\n\n\n\n
Let’s take a look at how we can use this function now.<\/p>\n\n\n\n
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Using the Python randint() method<\/h2>\n\n\n\n
We’ll need to import the random<\/code> module. After that, we can call the function using the syntax.<\/p>\n\n\n
\nimport random\n\nbeg = 10\nend = 100\n\n# Generates a random integer between (10, 100)\nrandom_integer = random.randint(beg, end)\n\nprint(f"A random integer between {beg} and {end} is: {random_integer}")\n<\/pre><\/div>\n\n\n
Possible Output<\/strong><\/p>\n\n\n
\nA random integer between 10 and 100 is: 59\n<\/pre><\/div>\n\n\n
Indeed, we can see that this number does lie between the range (10, 100).<\/p>\n\n\n\n
If we want to repeat this pseudo-random generation, let’s use a loop<\/a> for that.<\/p>\n\n\n
\nimport random\n\nbeg = 0\nend = 100\n\nrand_list = [random.randint(beg, end) for _ in range(10)]\n\nprint(rand_list) \n<\/pre><\/div>\n\n\n
Possible Output<\/strong><\/p>\n\n\n
\n[61, 16, 39, 86, 25, 11, 16, 89, 99, 70]\n<\/pre><\/div>\n\n\n
We can see that these numbers are in the 0 to 100 range. And the pseudo-random conditions indicate that no two consecutive<\/strong> numbers repeat.<\/p>\n\n\n\n
NOTE<\/strong>: As I mentioned earlier, both beg<\/code> and end<\/code> must be integers, with beg<\/code> <= end<\/code>. Otherwise, we will get a ValueError<\/code> Exception.<\/p>\n\n\n\n
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Conclusion<\/h2>\n\n\n\n
In this article, we learned how we could use the randint()<\/code> method in Python, to generate random integers.<\/p>\n\n\n\n
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References<\/h2>\n\n\n\n