Python: Check second variable if first variable is True?

I have a script that checks bools through if statements and then executes code. What I am trying to do is make it so that:

if variable a is True, check if b is True and execute code
if variable a is False, execute the same code mentioned before

A simplified version of what I currently have is this:

if a:
    if b:
        print('foo')
else:
    print('foo')

Is there a better way to do this that doesn't require me to write print('foo') twice?