[dgunning]

What this changes

Removes the seven exception names that were deprecated throughout 5.x: StatementNotFound, NoCompanyFactsFound, SECFilingNotFoundError, InvalidDateException, IdentityNotSetException, TooManyRequestsException and DataObjectException. Importing one now raises ImportError. Their replacements in edgar.exceptions have existed since 5.48.0. This finishes the alias-removal half of the 07lk.10 window, which #1557 left for a separate PR.

• The module __getattr__ shims are removed from edgar.core, edgar.dates, edgar.entity, edgar.entity.core, edgar.entity.entity_facts, edgar.httprequests, edgar.sgml.sgml_parser and edgar.xbrl.exceptions, and the names are taken out of every __all__ that listed them. Three of those __all__ entries were already flagged by ruff as undefined names (F822). DataObjectException leaves edgar.__all__.
• edgar/_compat.py is deleted. It had no other user, and its warning text hard-codes "removed in v6.0". edgar.core's access-mode lookup is now the module __getattr__ itself, so its warning is one call level closer to the caller and its stacklevel is the default again. The EDGAR_ACCESS_MODE is documented with a timeout/connection/retry table, but nothing in the package reads it #1326 test that the warning names the caller's code still passes.
• MCP fix: ERROR_SUGGESTIONS was keyed on three of the old names. get_error_suggestions() looks errors up by type(e).__name__, which hasn't matched those keys since 5.48.0, so those three suggestion lists were never returned there. The keys now use the canonical names.
• The offerings eval recognised outage errors by two of the old class names, which nothing has raised since 5.48.0. It now uses the canonical names.

Part of #933 (the 6.0 exception hierarchy; that issue stays open for the CI job below).

Verification

• Docs: docs/guides/error-handling.md and docs/upgrade/6.0.md now have a "Names removed in 6.0" table. The guide-names test checks that table in reverse: all seven must not resolve, and every other exception the guide names must. The entity-facts reference, edgar/xbrl/docs/XBRL.md and the two package CLAUDE.md files use the new names.
• Silence check: test_removed_alias_no_longer_resolves asserts, for every module that used to resolve an old name, that it is no longer an attribute, no longer in __all__, and that from module import Name raises ImportError.
• Changelog: changelog.d/07lk10-aliases.removed.md
• Ground truth: all seven new names exist in the v5.48.0 tag (git show v5.48.0:edgar/exceptions.py), which is what the guide's "switch before upgrading" advice relies on.
• hatch run test-fast: 42503 passed, 9 skipped, 1 xfailed. from edgar import * and every changed module import with no warnings under -W error::DeprecationWarning, and every remaining __all__ entry resolves. Ruff finds no new pyflakes errors in the changed files and three fewer than main.

6.0

• This PR removes names deprecated for 6.0, and docs/upgrade/6.0.md says what users see now (ImportError) and what to use instead.

Not in this PR: removing the test-strict-errors job from .github/workflows/python-hatch-workflow.yml. That edit needs a token with workflow scope, so the maintainer will make it.

AI assistance

• Assisted. Tool and model: Claude Code, Claude Opus 5.5

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