For some functions, as they operate on large numbers of objects can be 
wrapped in another iterative function to give you the ability to provide 
progress.

def centerPivots():
    sel=pm.ls(sl=1)
    count=0
    for obj in sel:
        pm.makeIdentity(s,apply=True,t=1,r=0,s=0,n=0,pn=1)
        count+=1
        print str(count)+' of '+str(len(sel))


Though unfortunately in the instance of a cache function, it only operates 
usually on one object and doesn't have any discernible way of catching how 
far along the progress is. When watching a cache happen in GUI instances, 
you can see the timeline update as the function goes through. So as Marcus 
said, I am looking for a kind of hacky way of perhaps utilizing this fact 
to call functions.

Another hacky way of automatically checking cache progress might be to have 
a function that checks the cache directory for output files and uses that 
to show progress.

I have also built a function for printing out to the output window opposed 
to maya's internal script editor output in hopes to use that for writing 
out messages (for purposes of seeing progress during command line operation 
and as a result, farm job reporting).

def printWindow(message):
    mayaOut=sys.stdout
    sys.stdout=sys.__stdout__
    print message
    sys.stdout=mayaOut

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