python replace two optional strings with a third (looking for a neat way) -

i'd replace 2 optional strings third, i.e. i'd able do:

string.replace(a or b, c)

yeah yeah can loop on predefined list, or can use 2 replace commands. i'm wondering if there's neater available i'm not aware of.

example

i have string this:

'foo bar baz'

i'd replace 'foo' 'yay' , 'bar' 'yay' get:

'yay yay baz'

i can do:

'foo bar baz'.replace('foo', 'yay').replace('bar', 'yay')

but that's kinda repetitive. i'm thinking there neat way (maybe esoteric function library extends string functions... dunno...)

import re re.sub("a|b", "c", str)

e.g.

re.sub("foo|bar", "yay", "foo bar baz")

Error