print("Hello") print("Hello"[0]) # result H print("Hello"[4]) # result O print("123"+"345") # result 123345 #숫자 에서 '_' 무시한다 print(123_456_789) # result 123_456_789 #Float #3.14 #Boolean True False num_char=len(input("what is your name?")) print(type(num_char)) print("Your name has "+str(num_char)+" characters.") two_digit_number=input('Type a two digit number') sum=int(two_digit_number[0])+int(t..