Re: [Tutor] silly remedial question

[Magnus Lycka]

Hi Kevin!

If you have lots of similar objects that you are going
to treat in a uniform way, don't give them a variable
each. Put them in a list or a dictionary.

E.g.:

d = {'input_1': [234, 234, 123],
     'input_2': [21,345,12],
     ...
    }

input_names = d.keys()
input_names.sort()

for input_name in input_names:
    print input_name, '=', d[input_name], ',', f(d[input_name])

Using a list, you'll only access them via integer numbers. Using
a dictionary you will access them via names, but you can't preserve
the order you placed them into the dictionary. Dictionaries are
basically unordered.
(See http://www.python.org/doc/current/lib/typesmapping.html).

To preserve both a name and an order, you could use a tuple in
a list:

l = [('input_1', [234, 234, 123]),
     ('input_2', [21,345,12]),
     ...
    ]

for input_name, value in l:
    print input_name, '=', value, ',', f(value)


-----Ursprungligt meddelande-----
Från: kevin parks <kpp9c at virginia.edu>
Skickat: 2003-11-24  09:02:53
Till: tutor at python.org
Ämne: [Tutor] silly remedial question 


> Hi folks!
> 
> I am trying to do something that seems rather simple, but perhaps is 
> something i haven't done before or forgot...
> 
> I have a function that does something to sequence and returns a 
> sequence. Now i call that function a bunch of times one a whole bunch 
> of lists and i get my output which is very nice. Problem is, that i 
> want to make that output more humanly readable form by first printing 
> the name of the list variable followed by a ' = ' and then the items in 
> the list.
> 
> so if sequence input_01 = [22, 25, 31] and i write something that 
> returns the mod 12 equivalent of each item in a new list [10, 1, 7]
> 
> i can print [22, 25, 31] and [10, 1, 7]
> but how can i get it to say :
> 
> input_01 = [22, 25, 31], [10, 1, 7]
> 
> Without saying:
> 
> print 'input_01 =', input_01
> 
> for each input list.
> 
> I can print the input and output lists no problem, but how do you tell 
> python to print the variable itself.. I don't want to do this by hand 
> as i have a huge bunch of list that i have to do this to that are 
> already sitting in a text file.
> 
> Not sure i made this clear or not...
> 
> 
> cheers,
> 
> kevin
> 
> 
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
> 


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