#🔒 Help with formatting.

54 messages · Page 1 of 1 (latest)

honest stump
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I cannot figure out the correct way to format my function return.

sly perchBOT
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@honest stump

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honest stump
full peak
honest stump
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I would like it to only show to .2f when it prints my total price

full peak
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You can use f-strings:

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!e

price = 1.23456
print(f"{price:.2f}")
sly perchBOT
full peak
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!f-string

sly perchBOT
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Format-strings

Creating a Python string with your variables using the + operator can be difficult to write and read. F-strings (format-strings) make it easy to insert values into a string. If you put an f in front of the first quote, you can then put Python expressions between curly braces in the string.

>>> snake = "pythons"
>>> number = 21
>>> f"There are {number * 2} {snake} on the plane."
"There are 42 pythons on the plane."

Note that even when you include an expression that isn't a string, like number * 2, Python will convert it to a string for you.

honest stump
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ok i will try to implement

full peak
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And FYI, this is printing, not returning. "Returning" is where you use the return statement.

honest stump
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print(f"Total Price: " + "$" + str(calcTax({subTotal:.2f}))) it is saying invalid decimal literal

full peak
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Yes. Note the f in my example

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Oh wait

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This code doesn't look like it would run even before that error.

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The {} isn't in a string

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You want f"Total Price: ${subTotal:.2f}"

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The purpose of f-strings is so you don't need the +s over and over.

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Well, one of the purposes.

honest stump
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as a total noob thank you it is working as it should now

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mine was so messy lol

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Oh and one other thing, how can I make it wait for the user to press enter when prompted

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right now it just runs main again

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when it finishes

full peak
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You're welcome.

And I'm not sure what you mean. input will always wait until the user presses enter unless something weird is going on with the input stream.

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Oh, I see.

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Just put input().

honest stump
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ok will try

full peak
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I'd just let the function return back to main, since it will re-show the menu and wait for input at the input line anyway.

honest stump
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gotcha

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on line 59 I had subTotal instead of total so I changed it

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oh wait i might know

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i added a calcTax call line after the elifs and still no luck

full peak
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What did you call the variable in calculate?

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The error is telling you exactly what the problem is.

honest stump
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right and i thought it returned total from calcTax

full peak
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The name returned by a function doesn't matter

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!e

def func():
    some_name = 1
    return some_name

some_other_name = func()
print(some_other_name)
sly perchBOT
full peak
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Look at what you called the variable in calculate.

honest stump
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i see i have to define total again

full peak
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Yes, or just use subTotal, since that's what you were using before.

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Well, actually I guess you weren't. I misremembered the code.

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So ya, either create a new total variable that holds the return of calcTax, or just += onto subTotal.

honest stump
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ok wonderful thank you again

full peak
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You're welcome. You can !close if you're done with the thread.

honest stump
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!close

sly perchBOT
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