[Tutor] how to unittest cli input

[Alex Kleider]

On 2015-10-14 12:27, Peter Otten wrote:
> Alex Kleider wrote:
> 
>> On 2015-10-13 14:44, Alex Kleider wrote:
>>> On 2015-10-13 12:11, Danny Yoo wrote:
>>> 
>>> 
>>>> ######################
>>>> def make_ask(f, l, p):
>>>>     d = {'Enter your first name: ' : f,
>>>>            'Enter your last name: ' : l,
>>>>            'Your mobile phone #: ' : p}
>>>>     return d.get
>>>> ######################
>> 
>> This is an example of a 'closure' is it not?
> 
> It does not make big difference, but I would call the return value 
> "bound
> method" rather than "closure". For me closure implies access to the 
> local
> namespace of the enclosing function, e. g.
> 
> def make_ask(f, l, p):
>     d = {'Enter your first name: ' : f,
>            'Enter your last name: ' : l,
>            'Your mobile phone #: ' : p}
>     def get(key):
>         return d.get(key)
>     return get
> 
> Here d is looked up when get() is invoked. Let's make a modification to
> demonstrate that the current binding of d is used:
> 
>>>> def make_ask(f, l, p):
> ...     d = {'Enter your first name: ' : f,
> ...            'Enter your last name: ' : l,
> ...            'Your mobile phone #: ' : p}
> ...     def get(key):
> ...         return d.get(key)
> ...     def set_d(new_d):
> ...         nonlocal d
> ...         d = new_d
> ...     return get, set_d
> ...
>>>> get, set_d = make_ask(*"abc")
>>>> get("Enter your first name: ")
> 'a'
>>>> class WontTell:
> ...     def get(self, key): return "won't tell"
> ...
>>>> set_d(WontTell())
>>>> get("Enter your first name: ")
> "won't tell"

Thank you, Peter, for your continued efforts to explain.
It is all getting pretty convoluted for my poor brain!
It took a very long time for me to figure out what the
class WontTell was all about.
I probably should follow Danny Yoo's advice and not concern
myself with this but my curiosity is roused.
ak