Making Variable Text Output More Pythonic?

[Casey McGinty]

Hi,

I have some classes that print variable outputs depending on their internal
state, like so:

def __str__(self):
    out = []
    if self.opt1: out += ['option 1 is %s' % self.opt1']
    if self.opt2: out += ['option 2 is %s' % self.opt2']
    ....
    return '\n'.join(out)

Is there any way to make this cleaner?

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