def physique(): print("masse volumique = 1") print("densité = 2") print("pourcentage massique = 3") print("concentration en masse = 4") print("dissolutuion(mere/fille) = 5") a = float(input("quelle formule ?")) if a == 1: b = input("unité de m = ") c = input ("unité de V = ") print("que voulez vous calculer ?") print("soit p, soit m soit V") d = str(input( )) if d == "p": m = float(input("m = ")) V = float(input("V = ")) p = m/V print("p = ",p,b,"/",c) physique() elif d == "m": p = float(input("p = ")) V = float(input("V = ")) m = p*V print("m = ", m,b) physique() else: m = float(input("m = ")) p = float(input("p = ")) V = m/p print("V = ",V, c) physique() elif a == 2: print("que voulez vous calculer ?") print("soit d ou p") d = str(input( )) if d == "d": p=float(input("p= ")) d=p/1000 print("d= ",d) elif d == "p": de=float(input("d= ")) p=de*1000 print("p= ",p,"g/L") elif a == 3: b=float(input("mA= ")) c=float(input("m= ")) d=(b/c)*100 print("pourcentage massique = ",d,"%") physique() elif a == 4: print("que voulez vous calculer ?") print("Cm=1, m=2 et V=3") d=float(input( )) if d == 1: b=float(input("m = ")) c=float(input("V = ")) e=b/c print("Cm =",e,"g/L") physique() elif d == 2: b = float(input("Cm = ")) c = float(input("V = ")) e=b*c print("m = ",e,"g") physique() elif d == 3: b=float(input("m = ")) c=float(input("Cm = ")) e=b/c print("V = ", e, "L") physique() elif a == 5: print("que voulez vous calculer ?") print("tm=1, Vm=2, tf=3 et Vf=4") d = float(input( )) if d == 1: b=float(input("tf= ")) c=float(input("Vf= ")) d=float(input("Vm= ")) e=(b*c)/d print("tm= ",e,"g/L") physique() elif d == 2: b = float(input("tf= ")) c = float(input("Vf= ")) d = float(input("tm= ")) e = (b * c) / d print("Vm= ", e, "g/L") physique() elif d == 3: b = float(input("tm= ")) c = float(input("Vm= ")) d = float(input("Vf= ")) e = (b * c) / d print("tf= ", e, "g/L") physique() elif d == 4: b = float(input("tm= ")) c = float(input("Vm= ")) d = float(input("tf= ")) e = (b * c) / d print("Vf= ", e, "g/L") physique() else : print("mauvais chiffre") physique() physique()