diff --git a/sio2/sisr/python/ex1.py b/sio2/sisr/python/ex1.py
new file mode 100755
index 0000000..821a47f
--- /dev/null
+++ b/sio2/sisr/python/ex1.py
@@ -0,0 +1,8 @@
+#!/usr/bin/python3
+
+pi=3.141592
+r=int(input("Veuillez renseigner la valeur du rayon du cercle : "))
+p=2*pi*r
+
+print("Le périmètre vaut: ", p)
+
diff --git a/sio2/sisr/python/ex2.py b/sio2/sisr/python/ex2.py
new file mode 100755
index 0000000..ef21996
--- /dev/null
+++ b/sio2/sisr/python/ex2.py
@@ -0,0 +1,27 @@
+#!/usr/bin/python3
+#Creation du tableau
+
+i=0
+tab=[]
+total = 0
+
+for i in range (5):
+    valeur = int(input("Entrez la valeur du tableau : "))
+    tab.append(valeur)
+    print(tab)
+
+l = len(tab)
+
+maxi = tab[0]
+mini = tab[0]
+moyenne = 0
+
+for i in range (0,l):
+    if mini > tab[i]:
+        mini = tab[i]
+    if maxi < tab[i]:
+        maxi = tab[i]
+    total = tab[i]+total
+    moyenne = total /(i+1)
+
+print("Le maximum : ", maxi,", le minimum : ", mini,", la moyenne : ", moyenne,", le total : ",total, ".")
diff --git a/sio2/sisr/python/ex3.py b/sio2/sisr/python/ex3.py
new file mode 100755
index 0000000..1105025
--- /dev/null
+++ b/sio2/sisr/python/ex3.py
@@ -0,0 +1,15 @@
+#!/usr/bin/python3
+
+phrase = input("Phrase: ")
+tabmot=phrase.split (' ')
+cptmot={}
+
+for mot in tabmot:
+        if mot in cptmot:
+                cptmot[mot]=cptmot[mot]+1
+        else :
+                cptmot[mot]=1
+
+for cle in cptmot.keys():
+        print(cle, cptmot[cle])
+