[Tutor] what am I not understanding?

[Alan Gauld]

On 20/10/14 22:18, Clayton Kirkwood wrote:

> for each_line in  key_name.splitlines():
>      if ':' in each_line:				#this design had to
>          for key, value in [each_line.split(':')]:	#see the last line

You shouldn't need the [] around split(), it generates a list for you.
In fact I'd expect the [] to break it since there will only be a single 
element(a list) in the outer list.

> #I presume that they force the source to look and feel like a tuple or list,

No, they create a list with whatever strip() produces. Here is a simpler 
example:

mylist = [1,2,3]
outerlist = [mylist]

outerlist is now [[1,2,3]]

> I think they force two strings into a two items of a tuple???

I think you might be referring to the unpacking of the list into 
key,value above?

key,value = [2,3]

makes key=2 and value=3

-- 
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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