diff --git a/lib/ultra_mastermind_obj.py b/lib/ultra_mastermind_obj.py
index e69de29..796c240 100644
--- a/lib/ultra_mastermind_obj.py
+++ b/lib/ultra_mastermind_obj.py
@@ -0,0 +1,40 @@
+# Librairie du projet en version orientée objet
+
+class Population:
+	"""
+	Classe qui représente notre population d'individuts
+	"""
+	def __init__(self, ng, l, n, ts, pm, tm):
+		self.individuals = [Individual().randomize(l) for _ in range(n)]
+		self.ng = ng
+		self.l = l
+		self.n = n
+		self.ts = ts
+		self.pm = pm
+		self.tm = tm
+
+	def select(self) -> None:
+		# TODO
+		pass
+
+class Individual:
+	"""
+	Classe qui représente les individuts de la population (les solutions potentielles)
+	"""
+	def __init__(self):
+		self.chromozome = ""
+
+	def setChromozome(self, c: str) -> None:
+		self.chromozome = c
+
+	def randomize(self, l: int) -> None:
+		# TODO
+		pass
+
+	def fitness(self, pm: str) -> float:
+		# TODO
+		pass
+
+	def mutate(self, tm: float) -> None:
+		# TODO
+		pass