Go deep on one language or get comfortable in three?

I keep getting contradictory advice on this. Half the internet says specialists get hired, the other half says the good engineers are the ones who can pick anything up in a week.

I'm about two years in. Decent at Python, can stumble through JS. Do I push Python until I'd honestly call myself strong at it, or is breadth the thing that actually matters at the 3-5 year mark?

Curious what people further along would tell their two-years-in self.