Python math.modf() – Fraction and Integer Parts of a Number

Python math.modf()

math.modf(x) function returns the fractional and integer parts of x.

If x is signed, then both fractional and integer parts carry the sign of x.

Syntax

The syntax to call modf() function is

math.modf(x)

where

ParameterRequiredDescription
xYesA numeric value.

Examples

1. Fraction and integer parts of a float value

In the following program, we take a float value of 5.2 in variable x, and find its fraction and integer parts.

Python Program

import math

x = 5.2
result = math.modf(x)
print('modf() :', result)
print('Fractional Part :', result[0])
print('Integer Part    :', result[1])
Run Code Copy

Output

modf() : (0.20000000000000018, 5.0)
Fractional Part : 0.20000000000000018
Integer Part    : 5.0

2. Fraction and integer parts of infinity

In the following program, we take the value of infinity in variable x, and find its fraction and integer parts.

Python Program

import math

x = math.inf
result = math.modf(x)
print('modf() :', result)
print('Fractional Part :', result[0])
print('Integer Part    :', result[1])
Run Code Copy

Output

modf() : (0.0, inf)
Fractional Part : 0.0
Integer Part    : inf

3. Fraction and integer parts of nan

In the following program, we take nan in variable x, and find its fraction and integer parts.

Python Program

import math

x = math.nan
result = math.modf(x)
print('modf() :', result)
print('Fractional Part :', result[0])
print('Integer Part    :', result[1])
Run Code Copy

Output

modf() : (nan, nan)
Fractional Part : nan
Integer Part    : nan

Summary

In this Python Math tutorial, we learned the syntax of, and examples for math.modf() function.

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