Wow!! this is a bit mind bending - it will take some processing time!!
Really appreciate your VERY useful and quick response.
On 19 March 2014 16:27, <shapovalovde...@gmail.com> wrote:
> hi!
> Don't worry it's pretty common question for newcomers :)
>
> This is called Function Argument Packaging and Function Argument
> Unpackaging.
>
> arguments could be packaged into list or dictionary:
> * - position based arguments
> ** - name based arguments
>
> >>> def f(*a, **b):
> return a, b
> >>> x, y = f(3, 'hello', c=4, test='world')
> >>> print x
> (3, 'hello')
> >>> print y
> {'c':4, 'test':'world'}
>
> and vice versa, arguments could be extracted for functions
>
>
> >>> def f(a, b):
> return a + b
> >>> c = (1, 2)
> >>> print f(*c)
> 3
>
> >>> def f(a, b):
> return a + b
> >>> c = {'a':1, 'b':2}
> >>> print f(**c)
> 3
>
>
>
>
>
>
> On Wednesday, March 19, 2014 7:06:31 AM UTC+2, Chops wrote:
>>
>> I am just learning Web2py
>>
>> I have an understanding of dict but now I find it used with two asterisks
>> before it and I can't seem to find an explanation!!
>>
>> Can it be used with anything other than a form? ((**dict(form.vars))?
>>
>> Can I use the two asterisks on other bits of code to server a common
>> purpose?
>>
>> Thanks in advance
>>
> --
> Resources:
> - http://web2py.com
> - http://web2py.com/book (Documentation)
> - http://github.com/web2py/web2py (Source code)
> - https://code.google.com/p/web2py/issues/list (Report Issues)
> ---
> You received this message because you are subscribed to a topic in the
> Google Groups "web2py-users" group.
> To unsubscribe from this topic, visit
> https://groups.google.com/d/topic/web2py/VyouPnp0rPU/unsubscribe.
> To unsubscribe from this group and all its topics, send an email to
> web2py+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to web2py+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
