# cheaking which element is not in second list
list1=[1,2,3,4,5,6,9]
list2=[2,3,0,1,6,7]
new_list=[]
i=0
while i<len(list1):
    if list1[i] not in list2:
        new_list.append(list1[i])       
    i+=1
print(new_list)
7868034376b896578f1bd40d33dadf44ab6da717
<mask token>

<mask token>
while i < len(list1):
    if list1[i] not in list2:
        new_list.append(list1[i])
    i += 1
print(new_list)

list1 = [1, 2, 3, 4, 5, 6, 9]
list2 = [2, 3, 0, 1, 6, 7]
new_list = []
i = 0
while i < len(list1):
    if list1[i] not in list2:
        new_list.append(list1[i])
    i += 1
print(new_list)

# cheaking which element is not in second list
list1=[1,2,3,4,5,6,9]
list2=[2,3,0,1,6,7]
new_list=[]
i=0
while i<len(list1):
    if list1[i] not in list2:
        new_list.append(list1[i])       
    i+=1
print(new_list)