Answer to Question #333395 in Python for Mikaa

Question

Reducing Fraction to Lowest Term

Create a Python script that will reduce an input fraction to its lowest term.

Program Requirements:

Function 1: Function that will check first if the input fraction is a VALID fraction:

Your answer:

Function 2: Function that will split a VALID fraction and return a list that consists the numerator and denominator.

Your answer:

Function 3: Function that will accept two parameters (numerator and denominator) to determine the greatest common divisor

Your answer:

Function 4: Function that will accept two parameters (numerator, denominator) and will return the reduced fraction:

Your answer:

Sample Output 1:

Input a fraction: 4/6

Reduced fraction is 2/3

Answer 1

def validFraction(f):
    f = [_ for _ in f.split('/')]
    if len(f) != 2:
        return False
    try:
        if int(f[0]) == 0 or int(f[1]) == 0:
            return False
    except:
        return False
    return True


def splitFraction(f):
    return [int(n) for n in f.split('/')]


def greatestCommonDivisor(n1, n2):
    if n1 < 0:
        n1 *= -1
    if n2 < 0:
        n2 *= -1
    if n1 > n2:
        n = n2
    else:
        n = n1
    for i in range(n,0,-1):
        if n2%i == 0 and n1%i == 0:
            return i
    return 1


def reduceFraction(n1, n2):
    gcd = greatestCommonDivisor(n1, n2)
    return [n1//gcd, n2//gcd]


fraction = input('Input a fraction: ')
if validFraction(fraction):
    redFract = reduceFraction(*splitFraction(fraction))
    redFract = str(redFract[0]) + '/' + str(redFract[1])
    print('Reduced fraction is', redFract)