Building lists

Seymore4Head Seymore4Head at Hotmail.invalid
Mon Oct 20 22:24:04 CEST 2014


On Mon, 20 Oct 2014 20:57:52 +0100, Mark Lawrence
<breamoreboy at yahoo.co.uk> wrote:

>On 20/10/2014 20:49, Seymore4Head wrote:
>> On Mon, 20 Oct 2014 20:40:18 +0100, MRAB <python at mrabarnett.plus.com>
>> wrote:
>>
>>> On 2014-10-20 19:10, Seymore4Head wrote:
>>>> I haven't had a lot of practice doing this.  If anyone knows of a site
>>>> I would appreciate it.
>>>>
>>>> Will Python work like this:
>>>> I am trying to come up with an example and work to it.  Say I want a
>>>> Grocery list and it will have a maximum size of 50 items.
>>>>
>>>> I want to do this with one list.
>>>> Make a list of 0-50.
>>>> Then can I add to that list so the second item will hold something
>>>> like cheese, eggs, milk.
>>>> Say then I want to add the price of cheese, eggs and milk.
>>>> Say then I want to add another list of price of cheese, eggs milk from
>>>> another store.
>>>>
>>>> Can this be done starting with just a list of numbers from 0-50?
>>>> Please no hints, just answer directly how it is done.
>>>>
>>>> for store in range (50):
>>>> 	print store
>>>>
>>>> How can I add to store where it looks like this:
>>>> (0,cheese, 1,eggs 2,milk , 3-50,blank for now)
>>>> 	
>>> The grocery list would be a list of the things you want to buy.
>>>
>>> There are a number of stores, so that would be a list of stores. For
>>> each store you want the price of each item, so that would be a dict
>>> where the key is the item and the value is the price of that item. That
>>> means it would be a list of dicts.
>>>
>>> Does that help?
>>
>> No.  I am pretty new to Python.
>>
>> For starters I would like to know if you can make a single item list
>> and then turn it into a 2 item list.  Is there a command for that?
>>
>> Do you have to know the number of items the list will have before
>> making it?
>>
>
>Python doesn't have commands and no.  Perhaps you'd care to (re)read the 
>tutorial.

Thank you



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