Python counting help

Your first solution is fine with the exception of your last line. Since it contains some invalid code, the code challenge runner thinks the first task is failing. Let's look at that line. (you don't need to cast 38 to an int in the first line, either, but that won't make anything fail)

summary  = ("I am {} days old! That's about {} decades!", (days, str[estimate]))

OK, so, first of all, you don't need those parentheses around everything. They won't make anything fail in this instance, but they're unnecessary and using them in other cases might cause things to fail. Let's avoid that.

summary  = "I am {} days old! That's about {} decades!", (days, str[estimate])

So what's wrong now? Well, you're not calling the .format() method at the end. Putting that comma in there creates a tuple (You'll learn about them in Python Collections) and we don't want that.

summary  = "I am {} days old! That's about {} decades!".format(days, str[estimate])

This still isn't passing but it's super-close. If you run this, you'll get an error about "type is not sub-scriptable" that's about as obvious as possible. What it means is that you're trying to get something out of a base type and Python can't do that. Right now you're probably thinking "wat"? Look at the end. You did str[estimate] which says "give me the 'estimate' index position of str". str is the built-in type that makes a string. And estimate is an int. But types don't have index positions so Python blows up.

If we wanted to make estimate into a string, we'd want to use parentheses, not brackets. str(estimate) not str[estimate]. But, thankfully, we don't need either of those. .format() will turn things into strings for us.

summary  = "I am {} days old! That's about {} decades!".format(days, estimate)

That ^ should pass just fine for you.

Thank you for your response. I'm just starting out with python. I enter the first variable into the quiz challenge as age = 38 but it came back telling me that I need to specify that it was an integer. That's why I changed it to ago = int(38). I didn't know about the division of 2 integers and specifying the decimal point. Finally, I feel like a moron, because I forgot to add the .format and my syntax was off. Thanks for the help.
Jim

I just tried the following code, incorporating your suggestions and it's still saying that it doesn't pass Task one.

age = int(38)
days = age * 52 * 7
decades = age / 10.
estimate = round(decades)
summary = "I am {0} days old! That's about {1} decades!".format(days, str[estimate])

i have a lot of questions for this code ))) 1) You dont have to explicitly convert to int. If you enter number without decimal point, itll recognized as integer

age = 38

2) In python 2 if you divide two integers you got an integer, if you want decmal - divide by 10.0 For example

38 / 10 = 3
38 / 10. = 3.8
round(3) = 3
round(3.8) = 4

3)You don`t have to use that bunch of brackets )))

"I am {0} days old! That's about {1} decades!".format(days, str[estimate])