[Python-Dev] PEP 572: Assignment Expressions

[Sven R. Kunze]

On 23.04.2018 17:59, Steve Holden wrote:
>
> While Tim's expression might look (superficially) like C, the 
> five-line alternative isn't exactly an inspiring example of 
> Pythonicity, is it?
>

What about

diff = x - x_base
if diff and gcd(diff, n) > 1:
     return gcd(diff, n)

# or

if (x - x_base) and gcd(x - x_base, n) > 1:
     return gcd(x - x_base, n)


and have the interpreter handle the optimization, or apply an lru_cache? ;-)

Cheers,
Sven
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