Update README.md

josemoracard · web-flow · commit 93ecba37a33c · 2024-01-01T04:52:11.000+01:00
diff --git a/exercises/39-class-that-iterates/README.md b/exercises/39-class-that-iterates/README.md
@@ -7,3 +7,5 @@
 ## 💡 Hint:
 
 + Read about generator functions and `yield`: https://sentry.io/answers/python-yield-keyword/
+
++ You must use `yield` on your solution.
