Python 4.2 : Number with commas and optional parameter

We continue with our code and here we are going to see the numbers with decimal point and the optional parameters well I changed the value of the constant and I'm going to put a person I'm going to put the size of a person to do this I'm going to go to the display information function I will create a variable size = 1 point 50 Here I will display the type of the size. title in brackets size at the bottom we'll do a print your size is a colon concatenate str between brackets size plus put, I'm going to run my code again and you're going to see the type of my size variable, you can see that here it is displayed type float which means a number with a decimal point displays the size at this level well, here we see that the size is static and to make it dynamic create a function ask for the size, well we'll make it simple on the display function I will add the size parameter and I run my code again there is an error on line 82 we say missing One required positional argument size so there is a size argument missing 82 it is level if I put comma 1 point 45 and I rerun my code four you see that everything works normally I'm going to delete this size at this level and I'm going to delete this and add a value of 0 to the size which means that the size parameter is optional if I run my code 4 it tells me your size 0 put well it will do an IF, if the size is equal to 0 it will not be displayed for that I will do if size = = 0 and we'll add a note here to say display this if the size is not equal to 0 I rerun my code you see that it does not display anything because the size = 0 I have the value here I put a dot 56 I rerun my code 5. You can see that it normally displays the size so that's all for the decimal numbers and the optional parameters, we'll see you soon for the formed strings.