()
Generate symbols tmp1, tmp2, ... infinitely.
Generate symbols tmp1, tmp2, ... infinitely.
Generate symbols tmp1 tmp2 ... infinitely .
def _gentmpvars():
    """
    Generate symbols tmp1, tmp2, ... infinitely.
    """
    i = 0
    while True:
        i += 1
        yield Symbol('tmp' + str(i))
def _gentmpvars ( ) : i = 0 while True : i += 1 yield Symbol ( 'tmp' + str ( i ) )