Nested for loops

[d79danny]

Hey Py community,
Im very new to Python so I trying to learn by giving myself small projects at work. Here is a basic version of what I'm
trying to do. The output I'm looking for is:

Output:
Gi0/1
Gi0/3
Gi0/4
Gi0/5
Gi0/6
Gi0/7
Gi0/9

But the code and the output I getting is this.

code:

a = ("Gi0/1", "Gi0/2", "Gi0/3", "Gi0/4", "Gi0/5", "Gi0/6", "Gi0/7", "Gi0/8", "Gi0/9", "Gi0/10")
b = ("Gi0/2", "Gi0/8", "Gi0/10")

for num_a in a: 
    for num_b in b:
        if num_a == num_b:
            print(num_a)

Output:

Output:
Gi0/2
Gi0/8
Gi0/10

I also tried if not num_a == num_b:

If someone can point me in the right direction I would greatly appreciate it.

Danny