French President Emmanuel Macron on February 29 promised to take a swim in the river Seine one day, as he officially inaugurated the 2024 Olympic village and praised the legacy the Games will leave to Paris, including a swimmable river.The keys to the 52-hectare village, just north of Paris along the Seine, were officially handed to the Olympics organisers on Thursday. It will host some 14,500 athletes and their staff before welcoming 9,000 for the Paralympics."I would do it," Macron told reporters when asked if he would swim in the river Seine, which the city has promised to make clean enough for swimming by 2025."But I won't give you the date, or you risk being there," he quipped, before giving a wink.Paris has been working on cleaning up the Seine so that people can swim in it again, as was the case during the 1900 Paris Olympics. But a sewer problem last summer led to the cancellation of a pre-Olympics swimming event.Macron is not the first French politician to promise to swim in the Seine. Paris Mayor Anne Hidalgo said she would do so more than three decades after her predecessor Jacques Chirac famously promised to do it "in the presence of witnesses" but never did.