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Python’s `math.lcm()` method efficiently calculates the least common multiple of integers in Python 3.9 and above.

# Python math.lcm Usage

In Python, the `math.lcm()` method is used to find the least common multiple of two or more integers. This method was introduced in Python 3.9, and it calculates the least common multiple by using the formula: `lcm(a, b) = abs(a*b) / gcd(a, b)`, where `gcd(a, b)` is the greatest common divisor of `a` and `b`.

## Syntax

The syntax for using the `math.lcm()` method is as follows:

“`python
import math

result = math.lcm(num1, num2)
“`

Where `num1` and `num2` are the two integers for which you want to find the least common multiple.

## Example

Let’s say we want to find the least common multiple of 4 and 6. We can do this using the `math.lcm()` method as follows:

“`python
import math

num1 = 4
num2 = 6

result = math.lcm(num1, num2)

print(f”The least common multiple of {num1} and {num2} is: {result}”)
“`

When we run this code, the output will be:

“`
The least common multiple of 4 and 6 is: 12
“`

## Notes

– The `math.lcm()` method can take more than two arguments. If you want to find the least common multiple of multiple integers, you can pass them as separate arguments to the method.
– If any of the integers passed to the `math.lcm()` method is zero, the result will also be zero, as zero is a multiple of every integer.
– The `math.lcm()` method only works with integers. If you pass floating-point numbers or other data types, it will raise a `TypeError`.

In conclusion, the `math.lcm()` method in Python is a convenient way to find the least common multiple of integers. It is a useful tool for various mathematical calculations and can save you time and effort when dealing with multiples in your Python programs.