def join(prev, sep, *args, **kw):
    '''alias of str.join'''
    yield sep.join(prev, *args, **kw)
def join(prev, sep, *args, **kw):
    '''alias of str.join'''
    yield sep.join(prev, *args, **kw)
def join ( prev , sep , * args , * * kw ) : yield sep . join ( prev , * args , * * kw )
alias of str.join
alias of str . join