Dynamic Formatting of String

[mikera1979]

use double slash in print statement.
You need to escape the '/' which is itself an escape character

So I was able to get a little further after working on it for a few hours, but I'm still hitting a roadblock with allowing for a dynamic input. For example, the below output is constricted by the formatting code I've entered and is giving me a Tuple Index error. Any thoughts on how I can change that to allow for a return of values 1-4 numbers in length?

size = '13 1/8'
#grabs numeric values in string and concatenates
def get_num(x):
    return str(''.join(ele for ele in x if ele.isdigit()))

x = get_num(size)
y = int(x)

#rules to remove leading 1s
if int(str(y)[:1]) == 1:
	if int(str(y)[1]) != 1:
		print('{} {}/{}'.format(*x))
	else:
		print('{}{} {}/{}'.format(*x))
else:
	print('{}{} {}/{}'.format(*x))