Implement PEP 626 -- Precise line numbers for debugging

BPO	42246
Nosy	@nascheme, @nedbat, @methane, @markshannon, @pablogsal, @alexhenrie, @isidentical
PRs	bpo-42246: Partial implementation of PEP 626. #23113 bpo-42246: Bump magic number. #23245 bpo-42246: Eliminate jumps to exit blocks by copying those blocks. #23251 bpo-42246: Fix memory leak in compiler #23256 bpo-42246: Make sure that line number is correct after a return, as required by PEP 626 #23495 bpo-42246: Don't forget the entry block when ensuring that all exits have a line number #23636 bpo-42246: Remove DO_NOT_EMIT_BYTECODE macros, so that while loops and if statements conform to PEP 626. #23743 bpo-42246: Make sure that `f_lasti`, and thus `f_lineno`, is set correctly after raising or reraising an exception #23803 bpo-42246: Don't eliminate jumps to jump, if it will break PEP 626. #23896 bpo-42246: Delete the now unused c_do_not_emit_bytecode field. #24094 bpo-43358: Fix bad free in assemble function #24697 bpo-43372: Re-generate frozen code for __hello__. #24708 bpo-43372: Use BUILDPYTHON for regen-frozen. #24714 bpo-43372: Use _freeze_importlib for regen-frozen. #24759 bpo-42246: Mark POP_TOP at end of expression statement as artificial, to conform to PEP 626. #24860 bpo-42246: Add PEP 626 to what's new in 3.10. #24892 bpo-42246: Mention that code.co_lnotab is deprecated in what's new for 3.10. #24902
Files	IMAG0629_1(1).jpg IMAG0629_1.jpg IMAG0629_1.jpg

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/markshannon'
closed_at = <Date 2021-03-02.11:08:24.441>
created_at = <Date 2020-11-02.15:32:42.250>
labels = ['type-feature', '3.10']
title = 'Implement PEP 626 -- Precise line numbers for debugging'
updated_at = <Date 2021-03-17.11:46:38.644>
user = 'https://github.com/markshannon'

bugs.python.org fields:

activity = <Date 2021-03-17.11:46:38.644>
actor = 'Mark.Shannon'
assignee = 'Mark.Shannon'
closed = True
closed_date = <Date 2021-03-02.11:08:24.441>
closer = 'Mark.Shannon'
components = []
creation = <Date 2020-11-02.15:32:42.250>
creator = 'Mark.Shannon'
dependencies = []
files = ['49669', '49670', '49671']
hgrepos = []
issue_num = 42246
keywords = ['patch']
message_count = 28.0
messages = ['380231', '380245', '380268', '380276', '380809', '380846', '380865', '380880', '382312', '382492', '382871', '382872', '382884', '382886', '382888', '382889', '382890', '382950', '382985', '383042', '383159', '383245', '383643', '387910', '388217', '388836', '388837', '388900']
nosy_count = 8.0
nosy_names = ['nascheme', 'nedbat', 'methane', 'Mark.Shannon', 'pablogsal', 'alex.henrie', 'BTaskaya', 'zhtw1234']
pr_nums = ['23113', '23245', '23251', '23256', '23495', '23636', '23743', '23803', '23896', '24094', '24697', '24708', '24714', '24759', '24860', '24892', '24902']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue42246'
versions = ['Python 3.10']

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Implement PEP 626 -- Precise line numbers for debugging #86412

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Implement PEP 626 -- Precise line numbers for debugging #86412

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