refactor(api)!: ntile function and method is now positional-only

Author: cpcloud

ibis/expr/api.py

@@ -1414,7 +1414,7 @@ def cume_dist() -> ir.FloatingColumn:
     return ops.CumeDist().to_expr()
 
 
-def ntile(buckets: int | ir.IntegerValue) -> ir.IntegerColumn:
+def ntile(buckets: int | ir.IntegerValue, /) -> ir.IntegerColumn:
     """Return the integer number of a partitioning of the column values.
 
     Parameters

ibis/expr/types/generic.py

@@ -2548,7 +2548,7 @@ def cume_dist(self) -> Column:
         """
         return ibis.cume_dist().over(order_by=self)
 
-    def ntile(self, buckets: int | ir.IntegerValue) -> ir.IntegerColumn:
+    def ntile(self, buckets: int | ir.IntegerValue, /) -> ir.IntegerColumn:
         """Return the integer number of a partitioning of the column values.
 
         Parameters