 Hi again, in this lesson we are going to talk about how to convert from octal to decimal number in Python programming language. Let's say that we have some octal number, I don't know, 2, 3, 4, 5 and that we want to convert it to integer. We can do that by using int function which can convert our octal number into decimal number. We will provide that number as an argument of this function but we get the result that is not result of conversion of octal number to decimal number, because first of all we didn't provide octal number. This number inside this function was treated as integer number, why? Because we need to put representation before our number that suggests to Python programming language that we are having octal number and that we want to work with octal number. So this number is integer number and if we want to make it to be octal number we will put before that number, number 0 and letter O and this is representation of octal number. Without this representation this number is treated as integer number but this is octal number. Wow, Python Idol is smart to already convert this number to decimal number, but anyway we'll use int function and we'll put inside brackets as an argument this octal number and let's convert it. We got the same number, let's try to check our result using calculator, let's go to octal number, choose number 2345, let's convert it to decimal number and we'll get same number as the result of our int function. So that's it, if you want to convert octal to decimal number you can use int function and provide as an argument octal number, that is number which must begin with representation of octal number and that is number 0 and letter O and after that you can put octal number. That's all for now, thanks for watching, happy coding.