my_list = [5,1,56,6,4,2,4,5,1]

for i in range(len(my_list)):
	my_list[i] +=100
	
print(my_list)

my_list = [5,1,56,6,4,2,4,5,1]

for elem in my_list:
	elem +=100

print(my_list)

my_list = [5,1,56,6,4,2,4,5,1]

for index, elem in enumerate(my_list):
	elem += 100

print(my_list)