implement the exception

Author: microslaw

pandas/core/sample.py

@@ -150,6 +150,11 @@ def sample(
         else:
             raise ValueError("Invalid weights: weights sum to zero")
 
+        if weight_sum > 1 and not replace:
+            raise ValueError(
+                "Invalid weights: If `replace`=False weights must sum to less than 1"
+            )
+
     return random_state.choice(obj_len, size=size, replace=replace, p=weights).astype(
         np.intp, copy=False
     )