How to turn a list of tuples into a dictionary?

[mrstephengross]

Let's say I've got a list of tuples, like so:

( ('a', '1'), ('b', '2'), ('c', '3')

And I want to turn it into a dictionary in which the first value of
each tuple is a key and the second value is a value, like so:

{ 'a' -'1', 'b' -'2', 'c' -'3' }

Is there a way to do this with a single line of code? Currently, I'm
doing it like this:

tuples = ( ('a', '1'), ('b', '2'), ('c', '3')
d = {}
for option,value in tuples: d[option] = value

Thanks,
--Steve

[castironpi@gmail.com]

Re: How to turn a list of tuples into a dictionary?

On Feb 26, 11:00 am, mrstephengross <mrstevegr...@g mail.comwrote:

Let's say I've got a list of tuples, like so:
>
  ( ('a', '1'), ('b', '2'), ('c', '3')
>
And I want to turn it into a dictionary in which the first value of
each tuple is a key and the second value is a value, like so:
>
  { 'a' -'1', 'b' -'2', 'c' -'3' }
>
Is there a way to do this with a single line of code? Currently, I'm
doing it like this:
>
  tuples =   ( ('a', '1'), ('b', '2'), ('c', '3')
  d = {}
  for option,value in tuples:  d[option] = value
>
Thanks,
--Steve

I'd hand-code it manually, by linking a C extension. Or
dict( iterable ).

http://www.python.org/doc/current/lib/built-in-funcs.html#l2h-21

[Paul Rubin]

Re: How to turn a list of tuples into a dictionary?

mrstephengross <mrstevegross@g mail.comwrites:

( ('a', '1'), ('b', '2'), ('c', '3')

I'm not trying to be snide, but have you tried looking in the manual?

See http://python.org/doc/lib and look at the section about built-in
types, if you want to know things about tuples or dictionaries.

[D'Arcy J.M. Cain]

Re: How to turn a list of tuples into a dictionary?

On Tue, 26 Feb 2008 09:00:54 -0800 (PST)
mrstephengross <mrstevegross@g mail.comwrote:

Let's say I've got a list of tuples, like so:
>
( ('a', '1'), ('b', '2'), ('c', '3')
>
And I want to turn it into a dictionary in which the first value of
each tuple is a key and the second value is a value, like so:
>
{ 'a' -'1', 'b' -'2', 'c' -'3' }
>
Is there a way to do this with a single line of code? Currently, I'm
doing it like this:
>
tuples = ( ('a', '1'), ('b', '2'), ('c', '3')
d = {}
for option,value in tuples: d[option] = value

How about this?
d = dict(tuples)

--
D'Arcy J.M. Cain <darcy@druid.ne t | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.

[mrstephengross]

Re: How to turn a list of tuples into a dictionary?

How about this?

d = dict(tuples)

Aha! I hadn't realized it could be so simple.

--Steve