Python math.integer Module: Integer Mathematics in Python

Import the new math.integer module for exact integer-only functions.

What You Will Learn

Python introduces math.integer to group exact factorial, combinations, permutations, greatest-common-divisor, least-common-multiple, and integer-square-root operations. The old math module names remain available as soft-deprecated aliases.

This example requires Python; it is not executable in the local Python 3.13 runtime.

Version requirement: this module was added in Python 3.15. The matching functions in math work on older versions, although those aliases are soft-deprecated starting with 3.15.

Step-by-Step Example

The example below makes the behavior visible with small input values that you can change safely.

from math.integer import comb, factorial, gcd, isqrt
print(comb(5, 2))
print(factorial(4))
print(gcd(18, 30))
print(isqrt(50))

How the Example Works

The imports provide the standard-library tools used in the demonstration: math.integer.
The print() calls make the return values or state visible so you can compare them with the explanation and check your prediction.

This code uses an API available from Python 3.15. Run it in Python 3.15 or newer; older interpreters may fail at the import statement.

Expected output (calculated using the equivalent functions in math on the available interpreter; not a Python 3.15 runtime test):

When You Would Use This

Use these exact integer operations for counting arrangements, simplifying ratios, or computing integer roots. This module is new in Python 3.15: on earlier interpreters, use the corresponding functions in math instead. The old math aliases remain available but are soft-deprecated in 3.15.

Practice: Modify the Code

Use math.integer to calculate sample combinations and integer roots.

Verify the changed output against the behavior described above, including the relevant invalid or boundary case.

For complete parameters and version details, consult the official Python documentation.

Common Beginner Mistakes

Importing math.integer on Python 3.13 or earlier, where the new module does not exist.
Using math.integer on a Python interpreter older than 3.15 without checking availability.

Key Takeaways

Import the new math.integer module for exact integer-only functions.
Python introduces math.integer to group exact factorial, combinations, permutations, greatest-common-divisor, least-common-multiple, and integer-square-root operations.
This example requires Python; it is not executable in the local Python 3.13 runtime.