#!/usr/bin/python 3.8
def mcalc(lst,k)
	for i in range (len(lst)):
		lst[i]+=k
	#for el in lst:
	#	el+=k
	#	print (el)
	#lst[0]=k
	print (lst)
	#return lst
def main():
	ml=[1,2,3,4]
	mcalc(ml,2
	print (ml)

if __name__=="__main__":
	main()