Cleaned up the code a bit

[srvmux]

made it use a one print instead of two and deleted the function that was handling the two prints and made it print directly and used a -= b, b -= a instead of a = a - b, b= b - a

[jiegillet]

The a-=b is OK, I guess, the but the main is less readable with your version. It's also misspelled.

[srvmux]

I don't have a main function here at all if__name__==" __ main __ ": is the way of python to say run this part only if this file was run as a main process, which means if you import this as module you won't see it print any thing which can be helpful @jiegillet

[jiegillet]

I am aware of how main works in python. For our purposes it doesn't really matter if the code is a script or a module, but I agree that using if__name__==" __ main __ ": is a general improvement.
However, my criticism was that you made main less readable by changing two short and readable lines into one monster of a line. Also you misspelled "Euclidian".

[jiegillet]

Address the changes and I'll merge the PR

[jiegillet]

1. It's spelled Euclidian
2. split that line into 2 lines to make it easier to read, something like

print('Euclidian Mod: {}'.format(euclid_mod(64 * 67, 64 * 81))
print('Euclidian sub: {}'.format(euclid_sub(128 * 12, 128 * 77))

[jiegillet]

Thank you!