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Hi,

I have the following tuple -

t = ("one","two")

And I can build a dictionary from it as follows -

d = dict(zip(t,(False,False)))

But what if my tuple was -

t = ("one","two","three")

then I'd have to use -

d = dict(zip(t,(False,False,False)))

Therefore, how do I build the tuple of Falses to reflect the length of
my t tuple?

Thanks for your help,

Barry.

In <. com>, bg_ie wrote:

> Therefore, how do I build the tuple of Falses to reflect the length of
> my t tuple?

In [1]: dict.fromkeys(('one', 'two', 'three'), False)
Out[1]: {'three': False, 'two': False, 'one': False}

Ciao,
Marc 'BlackJack' Rintsch

wrote:

> I have the following tuple -
>
> t = ("one","two")
>
> And I can build a dictionary from it as follows -
>
> d = dict(zip(t,(False,False)))
>
> But what if my tuple was -
>
> t = ("one","two","three")
>
> then I'd have to use -
>
> d = dict(zip(t,(False,False,False)))
>
> Therefore, how do I build the tuple of Falses to reflect the length of
> my t tuple?

For dictionaries there is a special method:

>>> dict.fromkeys(("one", "two", "three"), False)
{'three': False, 'two': False, 'one': False}

When you are just interested in the list of tuples, use repeat():

>>> from itertools import repeat
>>> zip("abc", repeat(False))
[('a', False), ('b', False), ('c', False)]

Peter

kirjoitti:
> Hi,
>
> I have the following tuple -
>
> t = ("one","two")
>
> And I can build a dictionary from it as follows -
>
> d = dict(zip(t,(False,False)))
>
> But what if my tuple was -
>
> t = ("one","two","three")
>
> then I'd have to use -
>
> d = dict(zip(t,(False,False,False)))
>
> Therefore, how do I build the tuple of Falses to reflect the length of
> my t tuple?
>
> Thanks for your help,
>
> Barry.
>

Another variation:

d = dict((x, False) for x in t)

Cheers,
Jussi

Hi,

> Therefore, how do I build the tuple of Falses to reflect the length of my t tuple?

Yet another solution :

d = dict(zip(t,[False]*len(t)))

Pierre