Seriously stuck on question 3

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#1

https://www.codecademy.com/paths/finance-python/tracks/introduction-to-python-for-finance/modules/calculating-financial-statistics/lessons/calculating-financial-statistics/exercises/introduction

All I have to say is that I honestly don’t know what to do on question 3 " Now, let’s format val to have our function return a percentage. We want to:

  • Multiply val by 100
  • Round the result to 1 decimal place
  • Return a formatted string that ends with a '%'"
#2

They want a formatted string. I don’t know if this is python 2 or 3 though.

in python 2 you might do something like: '{:.1f}%'.format(val*100)

in python 3 you can do something like '{}%'.format(val*100) (can you also do this in 2? I’m not sure) also I omitted the rounding in this example… left as an exercise… i’m not lazy… (yes I am)

Here’s a nice article (that also includes f-strings… which are just another way to do a very similar thing): https://realpython.com/python-f-strings/

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#3

Also, if you need to round a number, you can use the round() function.

number=3.44
rounded_num=round(number,1)
print(rounded_num)
>>>3.4

IDK if this is supported in Python 2.

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#4

Im in python3 no worries

1 Like
#5

‘{}%’.format(val*100)
This isnt working im not sure why. (I’m in python 3 btw) where do I add this, after the return?

#6

You can

formatted_result = '{}%'.format(val*100)
return formatted_result

or

return '{}%'.format(val*100)

all assuming you have a val with a value.

#7

We don’t need to do any rounding if the return value is a formatted string.

 return f"{100 * val:.1f}"

The rounding is done for us, and not like round(), but the true up on 5, down on 4 type of rounding.

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#8

it didnt work idk why

#9

its not working hmmmm

#10

can you copy and paste what you put? (make sure to format it with the </> button).

#11

Above I left off the %. Once that is added it passes for me and displays, 7.5%.

#12

<rate_of_return = 0.075
def display_as_percentage(val):
return ‘{}%’.format(val*100)>

#13

Round the result to 1 decimal place

Where is your rounding?