Question: ```
x =[1,2,3,4,5,6]
y = [1,2,3,4,5]
if x == y:
    print("Numbers found")
else:
    print("Numbers not found")

```

*I want to print the numbers which are not present in list y.*

Answer: 
The fastest way is to transform both in sets and print the difference:

```
>>> print(set(x).difference(set(y)))
{6}

```

This code print numbers present in `x` but not in `y`
```
x =[1,2,3,4,5,6]
y = [1,2,3,4,5]

for i in x:
    if i in y:
        print(f"{i} found")
    else:
        print(f"{i} not found")

```