I'm trying to write a program that will calculate the LCM of up to five numbers.
I've written this code so far:
a = b = True
while a == True:
x = input('\nEnter two to five numbers separated by commas: ').split(',')
if x.index(0) == True:
print('\nNo zeroes.')
if len(x) < 2:
while b == True:
x.append(input('\nTwo numbers are needed. Enter one more: '))
b = False
if len(x) > 5:
print('\nDon\'t enter more than five numbers.')
continue
a = False
When I try to run the code I get this error:
Enter two to five numbers separated by commas: 0
Traceback (most recent call last):
File "/home/mint/.config/spyder-py3/lcm.py", line 4, in <module>
if x.index(0) == True:
ValueError: 0 is not in list
How is this possible? My input was 0.
Maybe something like this, might be suitable for your purposes:
from functools import reduce
from math import gcd
x = []
while len(x) < 2 and len(x) <= 5: # Using this condition removes unneccesary break code:
x = [int(i) for i in input('\nEnter two to five numbers separated by commas: ').split(',')]
if x[0] == 0:
print('\nNo zeroes.')
if len(x) > 5:
print('\nDon\'t enter more than five numbers.')
if len(x) < 2:
x.append(int(input('\nTwo numbers are needed. Enter one more: ')))
lcm = reduce(lambda x, y: x * y // gcd(x, y), x) # lcm = x * y / gcd(x, y)
print(lcm)
When run this prints the lcm, of the 5 inputted numbers.
Enter two to five numbers separated by commas: 1, 2, 3, 4, 5
60