two conditionals with intermediate code

[Skaperen]

i don't have any code handy that i can show. i'll try to describe something simple. a one place in the elif sequence i want to test a string for an '=' character. if it does have an '=' in it, i also want to test for the part before the '=' being in a dictionary. so it would look like

elif '=' in my_string and my_string.split('=',1)[0] in magic_keys:

that works but i also want the part after the '=', so

key,value = mystring.split('=',1)

is going to be done, somewhere. i'd like to do the split only one time. in C it is easy to save results and test them. so i end up making code that does things twice.

if the compiler phase optimized well, it could see that split is done twice with like args and make the run time p-code that does the split just once. then i would not worry about it. gcc has very good optimization of cases like that. but i really don't know what i get out of CPython.