modf() function is an inbuilt function in Python that returns the fractional and integer parts of the number in a two-item tuple. Both parts have the same sign as the number. The integer part is returned as a float. Syntax :
modf(number)
Time Complexity: O(1)
Auxiliary Space: O(1)
Parameter :
There is only one mandatory parameter which is the number.
Returns : This method returns the fractional and integer parts of number in a two-item tuple. Both parts have the same sign as the number. The integer part is returned as a float. Exception :
TypeError: If anything other than a float number is passed, it returns a type error.
Below is the Python3 implementation of modf() method : Code #1
Python3
# Python3 program to demonstrate the function modf()# This will import math moduleimport math # modf() function used with a positive numberprint("math.modf(100.12) : ", math.modf(100.12))# modf() function used with a negative numberprint("math.modf(-100.72) : ", math.modf(-100.72))print("math.modf(2) : ", math.modf(2)) |
Output :
math.modf(100.12) : (0.12000000000000455, 100.0) math.modf(-100.72) : (-0.7199999999999989, -100.0) math.modf(2) : (0.0, 2.0)
Code #2 : TypeError
Python3
# Python3 program to demonstrate the # error in function modf()# This will import math moduleimport math # modf() function used with a positive numberprint("math.modf(100.12) : ", math.modf("100.12")) |
Output :
Traceback (most recent call last):
File "/home/fa6d7643de17bafe9a0e0693458e4bdb.py", line 9, in
print("math.modf(100.12) : ", math.modf("100.12"))
TypeError: a float is required
Code #3 :
Python3
# Python3 program to demonstrate the# error in function modf()# This will import math modulefrom math import modflst = [3.12, -5.14, 13.25, -5.21]tpl = (33.12, -15.25, 3.15, -31.2)# modf() function on elements of listprint("modf() on First list element : ", modf(lst[0]))print("modf() on third list element : ", modf(lst[2]))# modf() function on elements of tupleprint("modf() on Second tuple element : ", modf(tpl[1]))print("modf() on Fourth tuple element : ", modf(tpl[3])) |
Output :
modf() on First list element : (0.1200000000000001, 3.0) modf() on third list element : (0.25, 13.0) modf() on Second tuple element : (-0.25, -15.0) modf() on Fourth tuple element : (-0.1999999999999993, -31.0)
Practical Application : Given two float numbers, multiply the fractional part and return the answer. Code #4 :
Python3
# Python3 program to demonstrate the# application of function modf()# This will import math moduleimport math # modf() function to multiply fractional parta = math.modf(11.2)b = math.modf(12.3)# Multiply the fractional part as is stored # in 0th index of both the tupleprint(a[0]*b[0]) |
Output :
0.05999999999999993
