[Tutor] How to run same lines of code in different order at runtime

[George]

On Friday 10 July 2015 02:40 PM, Alan Gauld wrote:
> On 10/07/15 01:29, Alan Gauld wrote:
>
>> It would be easierv to access the last element directly rather than
>> looping:
>>
>> lastCity = route[-1]
>
> Oops. looping -> calculating.
>

Thank u Steven and Alan,

I am sorry to reply late.  Your replies were insightful and particularly 
Steven's which was more specific to my problem, although i had a slight 
difficulty in understanding them.  I will get back to you with the 
problem on graph with pylab. Although i am also looking into another 
solutions to the same problem (me a Python newbie and programming 
hobbyist). i will do some programming and will get back to you with my 
results.

Thanks again.

George.