Update ops.py

Author: BobTheBuidler

mypyc/ir/ops.py

@@ -1049,7 +1049,7 @@ def __init__(self, src: Value, index: int, line: int = -1, *, borrow: bool = Fal
         self.index = index
         assert isinstance(src.type, RTuple), "TupleGet only operates on tuples"
         src_len = len(src.type.types)
-        assert -src_len <= index <= src_len - 1, f"source {src} index {index}"
+        assert -src_len <= index <= src_len - 1, f"source type: {src.type}\nindex: {index}"
         self.type = src.type.types[index]
         self.is_borrowed = borrow