[Tutor] Dictionaries of Tuples of Strings
rabidpoobear at gmail.com
Fri Feb 23 22:06:17 CET 2007
Adam Pridgen wrote:
> When I have a tuple with a single string in a dictionary entry and
> try to iterate over the tuple and it breaks the string into individual
> characters. Is this supposed to be happening?
> This problem is a little tricky to explain so I have included the
> output and the corresponding example code. In the example I have a
> dictionary with tuples of strings as the values. If I have more than
> one tuple, I am ok and the value is not broken into individual
> characters (look at the "type="in the code below. If I have only one
> string in the tuple value, then the string is broken into individual
That's because you can't make tuples of single values.
Parenthesis are ways of controlling order of operation.
They don't create tuples unless there's more than one value.
>>> x = (((((((((('hello'))))))))))
>>> x = [[[[[[[[[['hello']]]]]]]]]]
Think of it like this:
a TUple needs TWO elements or more.
use lists. They can contain single elements.
When you write
>>> x = ('somestring')
you might think it's creating a single-value tuple, but it's not.
y = 5
z = 23
x = (y * (z + y) / y ** 3)
In this case you wouldn't expect these parenthesis to build tuples,
Hope that helps somewhat,
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