list1 = [10, 20, 4, 45, 99] mx=max(list1[0],list1[1]) secondmax=min(list1[0],list1[1]) n =len(list1) for i in range(2,n): if list1[i]>mx: secondmax=mx mx=list1[i] elif list1[i]>secondmax and \ mx != list1[i]: secondmax=list1[i] print("Second highest number is : ",\ str(secondmax))