Gitane Tour De France and it sounds like from the 1970's.
You need to know these things: It will need French-specific sized handlebar stem if you ever want to change your position, it will need a French-threaded freewheel if you want to change gearing--a standard freewheel will strip the threads on the rear hub, thus ruining it. You will need to find a bike store that knows about bikes that were made before last week; most big cities have one or two. It's a good, solid bike that's really more versatile, lower maintainance, and user-friendly than many contemporary road bikes; mazel tov on your barn find!