CODEWITHSUNDEEP
pythonfunctionreturn
user3792291
user3792291

Reputation:

How to return 2 values from a function

I am having difficulty understanding why my function does not store the I value that I append onto a list?

The code is:

def numberofdays ():
    sum = 0
    leapyears = []
    for i in range (1901, 2000):
            if i%4 == 0:
                leapyears.append (i)
                sum = sum + 366

            else:
                sum = sum + 365
    return sum + 366  #to account for year 2000.
    return leapyears

When I call print numberofdays(), it only returns 36525, the sum value.

Upvotes: 0

Views: 820

Answers (2)

user2555451
user2555451

Reputation:

Using return immediately exits a function. Meaning, the return leapyears line will never be reached because of the return sum + 366 line directly above it.

If you want to return two values from numberofdays, you can put them in a tuple and return that:

return sum + 366, leapyears

Below is a demonstration:

>>> def func():
...     return 1, 2
...
>>> func()
(1, 2)
>>> a, b = func()  # You can use iterable unpacking to give the values names
>>> a
1
>>> b
2
>>>

Also, as @JonClements said in his comment, it looks like you actually meant to do range (1901, 2001) instead of range (1901, 2000). Remember that the second argument to range is always exclusive (not included).

Finally, you can replace code such as sum = sum + 366 with just sum += 366. This is really a minor issue, but the latter approach is more pythoic. ;)

Upvotes: 3

AMADANON Inc.
AMADANON Inc.

Reputation: 5919

The return statements ends the function - as soon as it hits the return, it's all over.

To return multiple values, you can return (sum+366,leapyears)

Upvotes: 0

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