The function is not returning the correct values. Can you figure out why?
```python
get_planet_name(3) # should return 'Earth'
```
def get_planet_name(id):
    # a dictionary also can work as a switch case
    switcher = {
        1:"Mercury",
        2:"Venus",
        3:"Earth",
        4:"Mars",
        5:"Jupiter",
        6:"Saturn",
        7:"Uranus", 
        8:"Neptune"
        }
    return switcher.get(id)
def get_planet_name(id):
    # a dictionary also can work as a switch case
    switcher = {
        1:"Mercury",
        2:"Venus",
        3:"Earth",
        4:"Mars",
        5:"Jupiter",
        6:"Saturn",
        7:"Uranus", 
        8:"Neptune"
        }
    return switcher.get(id)