On 06/12/2013 22:07, Joel Goldstick wrote: ..........
Not that this will speed up your code but you have this: if not clockwise: s = start start = end end = s Python people would write: end, start = start, end
this works for some small number of variables, but on my machine with python 2.7 I start losing with 4 variables eg
C:\code\optichrome\74663>python -mtimeit -s"a=1;b=2;c=3;d=4" "a,b,c,d=b,c,d,a" 1000000 loops, best of 3: 0.206 usec per loop C:\code\optichrome\74663>python -mtimeit -s"a=1;b=2;c=3;d=4" "t=a;a=b;b=c;c=d;d=t" 10000000 loops, best of 3: 0.118 usec per loop
It doesn't seem to make much difference that the variables are related as I see a similar behaviour for simple assignments
C:\code\optichrome\74663>python -mtimeit -s"a=1;b=2;c=3;d=4;e=5;f=6;g=7;h=8" "a,b,c,d=e,f,g,h" 1000000 loops, best of 3: 0.204 usec per loop C:\code\optichrome\74663>python -mtimeit -s"a=1;b=2;c=3;d=4;e=5;f=6;g=7;h=8" "a=e;b=f;c=g;d=h" 10000000 loops, best of 3: 0.103 usec per loop
for less than 4 variables the tuple method is faster. -- Robin Becker -- https://mail.python.org/mailman/listinfo/python-list
