Tamer Higazi <tamerito...@arcor.de> writes:
> Is there a way to get dict by search terms without iterating the
> entire dictionary ?!
(A language note: you may be unaware that “?!” does not connote a simple
question, but outrage or incredulity or some other indignant expression.
This implies not a polite query, but more a harsh demand for the other
person to explain.
I think your questions will communicate better punctuated simply with
“?”.)
> I want to grab the dict's key and values started with 'Ar'...
surnames_by_givenname = {
"Amanda": "Power",
"Amaly": "Higgens",
"Joseph": "White",
"Arlington": "Black",
"Arnold": "Schwarzenegger",
}
items_whose_keys_start_with_Ar = [
(key, value)
for (key, value) in surnames_by_givenname.items()
if key.startswith("Ar")]
> I could make an iterator and look if it's inside.
> I wasn't able to find it, but I am asking myself if dict has a builtin
> method to get me these key/values on the fly.
Not a method on the dict, but a method on the string and a list
comprehension (or, if you prefer, use a generator expression or dict
comprehension, etc.).
> Why do I ask you?! I am working with the ZODB Database, where I make
> use of a PersistentDict and PersistentList, and I want
I'll be interested to know the rest of that paragraph, to know whether
the above list comprehension meets your constraints.
--
\ “I was in the first submarine. Instead of a periscope, they had |
`\ a kaleidoscope. ‘We're surrounded.’” —Steven Wright |
_o__) |
Ben Finney
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