Stefan Ram wrote:
> Michael Torrie <torr...@gmail.com> writes:
>>On 09/15/2017 12:04 PM, Stefan Ram wrote:
>>>writes some complex queries to the table, what can be expected
>>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>How do you plan to code these queries?
>
> I did a quick prototype. I am aware that the code
> is very quick and very dirty. But since you ask:
>
> The table is filled after »# fill table« below.
>
> An example ad-hoc query then follows after
> »# query table« below.
>
> This code was not intended to be read by someone else,
> the next thing to do is a clean up of the code.
"import builtins", lines ending on ';', both extra and missing spaces, come
on ;)
Do yourself a favour, and steer your style a bit more into the direction of
PEP 8.
> So you have been warned!
>
> The output should be:
>
> |abend
> | - Beispiel = Montag abend
> |Abend
> | - Beispiel = des Abends
> |ähnlich
> | - Beispiel = dem Hause ähnlich
Based on the example I wonder if you really want a table, or whether
something tree-like would be more appropriate:
from collections import OrderedDict, defaultdict
data = {
"abend": {
"Beispiel": {"Montag abend"},
"Kategorie": {"Deutsches Wörterbuch", "Groß- und Kleinschreibung"}
},
"Abend": {
"Beispiel": {"des Abends"},
"Kategorie": {"Deutsches Wörterbuch",
"Getrennt -und Zusammenschreibung"}
},
"Montag abend": {
"Kategorie": {"Getrennt -und Zusammenschreibung"}
},
"ähnlich": {
"Kategorie": {"Deutsches Wörterbuch"},
"Beispiel": {"dem Hause ähnlich"}
},
}
data = OrderedDict(sorted(
((k, defaultdict(set, v)) for k, v in data.items()),
key=lambda kv: (kv[0].casefold(), kv[0])))
for key, value in data.items():
if "Deutsches Wörterbuch" in value["Kategorie"]:
print(key)
for example in value["Beispiel"]:
print(" -", example)
If this turns out to be too slow just throw more lookup tables at it:
by_relation = defaultdict(list)
for key, value in data.items():
for k, v in value.items():
for vv in v:
by_relation[k, vv].append(key)
Then you can rewrite the print loops to avoid iterating over the whole
table:
for key in by_relation["Kategorie", "Deutsches Wörterbuch"]:
print(key)
for example in data[key]["Beispiel"]:
print(" -", example)
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