Decorator 'FreeVarArr', free variable array, returns an array of its decoratee (decorated function), with free variables set by name to a range of values. Produced & attached. import new def cell_values( *cells ): return [ cell.cell_contents for cell in cells ] def CellMake( *opts ): dumbopts= [ 'opt%i'% i for i in range( len( opts ) ) ] dumbvars= ', '.join( dumbopts ) innermakefmt= "def innermake( %s ):\n\tdef toget(): %s\n\treturn toget" exec innermakefmt% ( dumbvars, dumbvars ) innerfunc= innermake( *opts ) freevars= list( innerfunc.func_code.co_freevars ) freevarindices= map( freevars.index, dumbopts ) return tuple( [ innerfunc.func_closure[i] for i in freevarindices ] ) def FreeVarArr( **kwargs ): vars= kwargs.keys() iters= [ kwargs[var] for var in vars] def newf( wfunc, closure ): return new.function( wfunc.func_code, wfunc.func_globals, wfunc.func_name, wfunc.func_defaults, closure ) def recall( wfunc ): freevars= list( wfunc.func_code.co_freevars ) freeindices= [ freevars.index( var ) for var in vars ] iterzip= zip( *[ iters[i] for i in freeindices ] ) closures= [ CellMake( *opts ) for opts in iterzip ] funcs= [ newf( wfunc, closure) for closure in closures ] return funcs return recall if __name__== '__main__': print CellMake( 2, 3, 'abc' ) a= CellMake( 2, 3, 'abc' ) def who(): some, someelse, moreelse, moreover= None, None, None, None @FreeVarArr( some= range(8,14), someelse= range(2,19), moreelse= ['a']*90, moreover= ['What!']*90 ) def what(): "doc string" print someelse, moreelse, moreover assert moreelse== 'a' assert moreover== 'What!' print "this prints", some #assign 'some' to range(8,14) in successive array functions print "John says:", some+ someelse, moreover+ ' '+ moreelse return some return what