[Tutor] TypeError: range() integer end argument expected, got float.

[Dominik George]

Hi,

> Using python 7.3

I think we must update 'import antigravity' to say something about
python-driven flux capacitors :þ ...

> def PaymentTable(balance, annualInterestRate, payment):

You should not CamelCase function names.

> upperbound = round((balance + (monthlyinterest * 12)) / 12, 0)

Your error is because round() does not cast to int. It produces an
integer number in a strict mathematical sense, but not as a data type.

Use int() for that.

> for payment in range(lowerbound, upperbound, 10):
>     if PaymentTable(balance, annualInterestRate, payment) == True:  ####Error occurs at this line
>         print 'Lowest Payment: ', payment
>         break

A few notes about that.

1. You mentioned above that you use Python 7.3. As already said, I do
not know what that is, because right now there is Python 2.x and 3.x. I
assumed you meant 3.3, because that is widely used, but in that case,
your print statement would not work. print() is a function, please get
used to that.

2. Do not compare with True. Either the expression is True, or it is
False. No need to be redundantly explicit ;).

3. There might be a more pythonic way to find the lowest payment. List
comprehensions and min() come to mind; however, due to your naming
conventions I do not fully understand what the code is supposed to find.
Something called PaymentTable is supposed to return a table-like thing,
not a boolean. Maybe you should get a bit more into detail about that
(comment your code, for example ;)) and help us give you more hints on
it.

Cheers,
Nik

-- 
* mirabilos is handling my post-1990 smartphone *
<mirabilos> Aaah, it vibrates! Wherefore art thou, demonic device??

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