[clue] python (function return array) [programming]

Mike Bean beandaemon at gmail.com
Wed Dec 28 06:21:48 MST 2011


Do you happen to know if it's possible to add (and)/(or) to an if
conditional?
say,

if condition x and condition y


On Tue, Dec 27, 2011 at 6:59 PM, Nick Pascucci <npascut1 at gmail.com> wrote:

> Hey, no problem. One thing to keep in mind about your solution: you're
> returning a tuple now, not a list. A tuple is immutable once formed, so if
> you get errors when trying to modify the return value, that's why.
> Generally you want to match the data structure you use to the concept
> they're supposed to be modeling, so if your data is mutable and you only
> want to return the first three elements, you want to use a slice: return
> my_list[:3].
>
> Cheers,
> Nick
>
>
>
> On Tue, Dec 27, 2011 at 7:53 PM, Mike Bean <beandaemon at gmail.com> wrote:
>
>> OK, I think I got this:
>>
>> def test_function():
>>     my_array=[1,2,3]
>>     return(my_array[0], my_array[1], my_array[2])
>>
>> for x in test_function():
>>     print(x)
>>
>> Thank you Nick!
>>
>> Bean
>>
>> On Tue, Dec 27, 2011 at 6:38 PM, Nick Pascucci <npascut1 at gmail.com>wrote:
>>
>>> Hi Mike,
>>>
>>> You can return lists just like any other variable in Python. When you
>>> iterate over it, just remember that the returned value was a list, and not
>>> a single value. You don't need to make it into a tuple or wrap it in
>>> another list like in your example. Here's a demo for you:
>>>
>>> def foo():
>>>     return ["baz", "bar", "quux"]
>>>
>>> my_list = foo()
>>> for x in my_list:
>>>     print x  # Prints "baz\nbar\nquuz"
>>>
>>> If you do like in your example, and put my_list = [foo()] you'll have a
>>> list of lists containing your desired list. Probably not what you're
>>> looking for.
>>>
>>> Hope that helps,
>>> Nick
>>>
>>>
>>>
>>> On Tue, Dec 27, 2011 at 7:18 PM, Mike Bean <beandaemon at gmail.com> wrote:
>>>
>>>> OK, I'm pretty sure this is a fairly novice question, but I'm working a
>>>> project on my own and my attempts to suss the solution have met with
>>>> limited success.
>>>> I'm writing mostly similar code over and over again, bad me.  But I
>>>> have to be able to return a list/array, and I don't know if return
>>>> statement can handle more then just a single variable.  So for example, I
>>>> realize your generic scenario is
>>>>
>>>> def function()
>>>>      variable="whatever"
>>>>      return(variable)
>>>>
>>>> newvar=function()
>>>> print("newvar")
>>>>
>>>> but I want to know is what's wrong with my logic in this sense:
>>>>
>>>> def function()
>>>>      my_array=[1,2,3]
>>>>      return(my_array)
>>>>
>>>> new_array=[(my_array)]
>>>> for x in new_array:
>>>>      print(x)
>>>>
>>>> testing has met with no success obviously.  I'm assuming it's because
>>>> an array is not the same thing as a generic variable.  In any case, any
>>>> suggestions/guidance from folks with experience in programming/python is
>>>> appreciated.
>>>>
>>>> Bean
>>>>
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>>>
>>>
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>>
>>
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>
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