# Scientific Computing with Python Projects - Budget App

I am failing a single test, which is

`FAIL: test_create_spend_chart`

Here are the details :
``` AssertionError: 'Perc[170 chars] 10| o o o \n 0| o o o \n ----------[204 chars] t ’ != 'Perc[170 chars] 10| o o \n 0| o o o \n ----------[204 chars] t ’ ```
From the above output, I figured out that my chart is showing an extra “o” for the first category, which makes it 10 per cent of all. But the expected output is 0 per cent.

According to the test, there are three budget categories business, food, and entertainment, with 10.99, 105.55 and 33.40, respectively, as withdrawals.

The calculated percentage, as calculated by the first line of code below of these three, are
[7, 70, 22], which is rounded to [10, 70, 20] by the second line.

10 + 70 + 20 adds up to 100.
but 0 + 70 + 20 adds up to 90 only.

And in the challenge description, it was mentioned that,
"The height of each bar should be rounded down to the nearest 10. "

I know am wrong, and I didn’t understand the meaning of the above line.
how can I round 7 to 0, and is it correct to do so?

``` percentage = [round(amount*100/total) for amount in withdrawsAmount] percentage = [round(p, -1) for p in percentage] ```

User Agent is: `Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/109.0`

Challenge: Scientific Computing with Python Projects - Budget App

Round it down , so `7``0`, `10``10`, `29``20`.