Solve the programming task below in a Python markdown code block.
Is the number even?

If the numbers is even return `true`. If it's odd, return `false`. 


Oh yeah... the following symbols/commands have been disabled!

 use of ```%```
 use of ```.even?``` in Ruby
 use of ```mod``` in Python
Also feel free to reuse/extend the following starter code:
```python
def is_even(n):
```