import random
#generate random list in range min_limit, max_limit, of size elements

def make_random_list(size, min_limit, max_limit):
	return [random.randint(min_limit, max_limit) for i in range(size)]

	#return [random.randint(min_limit, max_limit) for _ in range(size)]

#create and returns list of evens and list of odds from existing list

def make_even_odd(my_list):
	even=[item for item in my_list if item%2==0]
	odd=[item for item in my_list if item%2!=0]	
	return even,odd

#make new list where all evens replaced with specific value
def make_new(my_list, value):
	return [value if item%2==0 else item for item in my_list]
#IMPORTANT! list comprehension approach cannot change original list

#write a function that CHANGES original list by replacing all evens with the 
#value
def replace(my_list, value):
	for i in range(len(my_list)):
		if(my_list[i]%2==0):
			my_list[i]=value
#IMPORTANT: to change original list we have to use for i in range(size)
#using for item in my_list will not work

#TRY THIS:
def replace1(my_list, value):
	for item in my_list:
		if(item%2==0):
			item=value
def main():
	my_list=make_random_list(10,-10,10)
	print("original list",my_list)
	evens, odds=make_even_odd(my_list)
	print("evens and odds",evens, odds)
	new_list=make_new(my_list, 100)
	print("original list", my_list)
	print("new list after replacement",new_list)
	#IMPORTANT! list comprehension approach cannot change original list
	replace(my_list, -1)
	print("original list", my_list)
	print("original list after replacement",my_list)
	#using for item in my_list and it doesn't work to change the list
	my_list=make_random_list(10,-10,10)
	replace1(my_list,-2)
	print("original list", my_list)
	print("original list after replacement",my_list)
main()