diff --git a/python.md b/python.md
index 4354c1b..f4107f0 100644
--- a/python.md
+++ b/python.md
@@ -10,3 +10,7 @@ title: python
 - leave venv: `deactivate`
 - list all installed package in file: `pip freeze > requirement.txt`
 - install package list in  file: `pip install -r requirement.txt`
+
+## tips
+- pprint permet  d afficher vos structure de données
+- la fonction dir() permet de lister les attribut d un 
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