>>> 'spam eggs' # single quotes
'spam eggs'
>>> 'doesn't' # use ' to escape the single quote...
"doesn't"
>>> "doesn't" # ...or use double quotes instead
"doesn't"
>>> '"Yes," they said.'
'"Yes," they said.'
>>> ""Yes," they said."
'"Yes," they said.'
>>> '"Isn't," they said.'
'"Isn't," they said.'