https://bugzilla.wikimedia.org/show_bug.cgi?id=62261
Bug ID: 62261
Summary: Throw specific error instead of generic APIError if
claim target is deleted
Product: Pywikibot
Version: core (2.0)
Hardware: All
OS: All
Status: NEW
Severity: minor
Priority: Unprioritized
Component: Wikidata
Assignee: Pywikipedia-bugs(a)lists.wikimedia.org
Reporter: felix(a)fex-it.de
Web browser: ---
Mobile Platform: ---
If adding a claim, two types of errors are thrown in case of a deleted item:
item = pywikibot.ItemPage(repo, "Q726")
target = pywikibot.ItemPage(repo, "Q14854094")
c = pywikibot.Claim(repo, u'P171')
c.addTarget(target)
item.addClaim(c) # Error if item or target were deleted
At the last line, you get either
pywikibot.exceptions.NoPage: Page [[wikidata:-1]] doesn't exist.
if item (Q726) has been deleted or
pywikibot.data.api.APIError: invalid-snak-value: Q14854094 not found
if the target (Q14854094) has been deleted.
It would be great, if for the latter a specific "InvalidValueError" or similar
would be thrown. Then, the error could be caught and handled specifically
without the need to parse the (possibly changing) API error message itself.
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