Is that code correct? - Printable Version

Is that code correct? - Printable Version

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Is that code correct? - Sameh - May-22-2021

Hi there,

This is my first participation. to answer ►How many miles are there in 10 kilometers?
Is this way correct:
▼

miles_in_kilometer = 10 / 1.61
print('There are {} miles in 10 kilometers'.format (miles_in_kilometer))

RE: Is that code correct? - Yoriz - May-22-2021

It depends on what you mean by correct?
if you want the output to be

Output:
There are 6.211180124223602 miles in 10 kilometers

Then it is correct?
Note: your conversion amount 1.61 is quite rounded up, it would probably be better using 1.609344

RE: Is that code correct? - Sameh - May-22-2021

Thanks for your prompt reply,
I mean is it correct when I answer this question..

How many miles are there in 10 kilometers?

Is it approximately 6.1 miles in 10 kilometers? and this Python code is correct output..!

RE: Is that code correct? - Yoriz - May-22-2021

10 km to miles

RE: Is that code correct? - Sameh - May-22-2021

Thanks,
I am trying to understand all exercises in Think Python book ...

Thanks again..

RE: Is that code correct? - perfringo - May-22-2021

You probably want to control display of the result. I would go with yard precision:

>>> miles_in_kilometer = 10 / 1.61
>>> print('There are {:.3f} miles in 10 kilometers'.format(miles_in_kilometer))
There are 6.211 miles in 10 kilometers

Of course one can use expressions inside f-strings so it can be written also as:

>>> f'There are {10/1.61:.3f} miles in 10 kilometers'
'There are 6.211 miles in 10 kilometers'

PS - don't use space between format and opening parenthesis.

RE: Is that code correct? - Yoriz - May-22-2021

Without an example of what a correct output should look like, no one knows what correct is.
@perfringo is assuming you want 3 decimal places but that might not be correct.

RE: Is that code correct? - Sameh - May-22-2021

Thanks @perfringo,
It's a good way to display decimal with f-string.

Thank to you all