Python - Extract private variables from a function? -

i have function f2(a, b)

it ever called minimize algorithm iterates function different values of , b each time. store these iterations in excel plotting.

is possible extract these values (i need paste them excel or text file) easily? conventional return , print won't work within f2. there way extract values , b public list in main body other way?

the algorithm may iterate dozens or hundreds of times.

so far have tried:

• print console (can't paste data excel easily)

• write file (csv) within f2, csv file gets overwritten within function each time though.

append values global list.

values = [] def f2(a,b):     values.append((a,b))     #todo: actual function logic goes here 

then can @ values in main scope once you're done iterating.