gh-75646: allow _PyType_Lookup() to raise exceptions#3616

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scoder wants to merge 23 commits into

python:mainfrom

scoder:_pt_lookup_exc

Commits on Sep 4, 2017

Speed up type creation, which is highly dominated by slow dict lookups.
Stefan Behnel
committed
Update comment after changing the function call that it refers to.
Stefan Behnel
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Ignore any errors (however unlikely) that may happen during the mro chained name lookups in _PyType_Lookup().
Stefan Behnel
committed

Commits on Sep 5, 2017

Extract non-caching code from _PyType_Lookup() to use it directly from update_one_slot().
Stefan Behnel
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Avoid some useless overhead for the no-basetype case. If "object" ever ceases to be a valid base type, there'll probably be larger code sections to change than this one.
Stefan Behnel
committed

Commits on Sep 6, 2017

Add comment.
Stefan Behnel
committed
Avoid uselessly searching empty bases for a metaclass. This is quite common in Python 3 now.
Stefan Behnel
committed

Commits on Sep 10, 2017

Avoid unsafe handling of borrowed "mro" reference during hash() call.
Stefan Behnel
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Clean up code and formatting a little.
Stefan Behnel
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Add braces for code style reasons.
Stefan Behnel
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Give internal helper function a local name that does not resemble (existing) API names.
Stefan Behnel
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Commits on Sep 11, 2017

Commits on Sep 13, 2017

add news entry for faster class creation
Stefan Behnel
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Change nice interface of "find_name_in_mro()" to evil interface eating lookup exceptions, just like "_PyType_Lookup()" did previously.
Stefan Behnel
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Mention amount of speedup in News entry.
Stefan Behnel
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Commits on Sep 14, 2017

Commits on Sep 15, 2017

Merge branch 'master' into _pt_lookup_exc
Stefan Behnel
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Propagate exception when _PyObject_LookupSpecial() fails (as done everywhere else).
Stefan Behnel
committed

Commits on Sep 16, 2017

Allow _PyType_Lookup() and _PyType_LookupId() to raise exceptions and handle them in the code that calls these functions.
Stefan Behnel
committed