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Groups > comp.lang.python > #29838

Re: write to a file two dict()

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On 2012-09-23 18:44, giuseppe.amatulli@gmail.com wrote:
> Hi
> Have two dict() of the same length and i want print them to a common file.
>
>
> a={1: 1, 2: 2, 3: 3}
> b={1: 11, 2: 22, 3: 33}
>
> in order to obtain
>
> 1 1 1 11
> 2 2 2 22
> 3 3 3 33
>
> I tried
>
> output = open(dst_file, "w")
> for (a), b , (c) , d in a.items() , b.items() :
>      output.write("%i %i %i %i\n" % (a,b,c,d))
> output.close()
>
> but i get the error ValueError: need more than 3 values to unpack.
>
> do you have some suggestions?.
>
If they are guaranteed to have the same keys:

a = {1: 1, 2: 2, 3: 3}
b = {1: 11, 2: 22, 3: 33}
for k in a:
      output.write("%i %i %i %i\n" % (k, a[k], k, b[k]))

If they don't have the same keys, but are merely the same length, then
you'll first need to decide what it should do.

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write to a file two dict() giuseppe.amatulli@gmail.com - 2012-09-23 10:44 -0700
  Re: write to a file two dict() MRAB <python@mrabarnett.plus.com> - 2012-09-23 19:00 +0100
  Re: write to a file two dict() 88888 Dihedral <dihedral88888@googlemail.com> - 2012-09-23 13:34 -0700

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