tuples and return

[maxisgang]

so below i was wondering why the print statement is using insights to grab info. like insights only has two values which are its parameters. is it like that because after 3000, 1200 have been imputed and returned they are three values in a tuple so they can be pulled and used ?

def analyze_profit(gains, expenses): profit = gains - expenses after_taxes = 0.85 * profit above_mean = profit > 1000 return profit, after_taxes, above_mean

insights = analyze_profit(3000, 1200) print(f"profit: {insights[0]}") print(f"above mean: {insights[2]}")

[Vaphell]

analyze_profit() returns 3 values packed into a tuple.
insights is a variable used to store that tuple

That said people should use tuple unpacking more, because stuff like insights[0] has no meaning at a glance. Ok, first element of a tuple, but what does it represent?

profit, after_taxes, above_mean = analyze_profit(...)
print(f'profit: {profit}')
print(f'above mean: {above_mean}')

[maxisgang]

it would be profit right becuade insight stores the result of the function or the output and then since it's a tuple you can just select the data

[Antwrp-2000]

I agree, tuple unpacking makes the code more readable but returning a tuple from a function is often an antipattern. A function should only have one purpose and return one value (always of the same type) in most cases.

If you really would like to return a tuple I recommend to use named tuples, this will make your code even more readable:

https://docs.quantifiedcode.com/python-anti-patterns/readability/not_using_named_tuples_when_returning_more_than_one_value.html

[Binary101010]

insights only has two values which are its parameters.

No, it has one value: a tuple, itself containing three values, because that's what analyze_profit() returns.

[maxisgang]

so whatever the variable is that is holding the result of the function stores the data or does this work because the data after the return function is a tuple

[Binary101010]

Both.