diff --git a/python/python-quiz.md b/python/python-quiz.md
index e06aa98644..fd72dae7b8 100755
--- a/python/python-quiz.md
+++ b/python/python-quiz.md
@@ -2099,3 +2099,13 @@ else:
 - [ ] 16
 - [ ] 128
 - [x] No fixed length is specified
+
+#### Q153.The process of pickling in Python includes?
+
+- [x] conversion of a Python object hierarchy into byte stream
+- [ ] conversion of a datatable into a list
+- [ ] conversion of a byte stream into Python object hierarchy
+- [ ] conversion of a list into a datatable
+
+**Explanation:** Pickling is the process of sterilizing a Python object, that is, conversion of a byte stream into Python object hierarchy. The reverse of this process is known as unpickling.
+