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This PR contains the following updates:

Package Change Age Confidence
coverage 7.6.4 -> 7.10.7 age confidence

Release Notes

nedbat/coveragepy (coverage)

v7.10.7

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  • Performance: with branch coverage in large files, generating HTML, JSON, or
    LCOV reports could take far too long due to some quadratic behavior when
    creating the function and class index pages. This is now fixed, closing
    issue 2048_. Thanks to Daniel Diniz for help diagnosing the problem.

  • Most warnings and a few errors now have links to a page in the docs
    explaining the specific message. Closes issue 1921_.

.. _issue 1921: #​1921
.. _issue 2048: #​2048

.. _changes_7-10-6:

v7.10.6

Compare Source

  • Fix: source directories were not properly communicated to subprocesses
    that ran in different directories, as reported in issue 1499_. This is now
    fixed.

  • Performance: Alex Gaynor continues fine-tuning <pull 2038_>_ the speed of
    combination, especially with many contexts.

.. _issue 1499: #​1499
.. _pull 2038: #​2038

.. _changes_7-10-5:

v7.10.5

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  • Big speed improvements for coverage combine: it's now about twice as
    fast! Huge thanks to Alex Gaynor for pull requests 2032 <pull 2032_>,
    2033 <pull 2033_>
    , and 2034 <pull 2034_>_.

.. _pull 2032: #​2032
.. _pull 2033: #​2033
.. _pull 2034: #​2034

.. _changes_7-10-4:

v7.10.4

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  • Added patch = fork for times when the built-in forking support is
    insufficient.

  • Fix: patch = execv also inherits the entire coverage configuration now.

.. _changes_7-10-3:

v7.10.3

Compare Source

  • Fixes for patch = subprocess:

    • If subprocesses spawned yet more subprocesses simultaneously, some coverage
      could be missed. This is now fixed, closing issue 2024_.

    • If subprocesses were created in other directories, their data files were
      stranded there and not combined into the totals, as described in issue 2025_. This is now fixed.

    • On Windows (or maybe only some Windows?) the patch would fail with a
      ModuleNotFound error trying to import coverage. This is now fixed,
      closing issue 2022_.

    • Originally only options set in the coverage configuration file would apply
      to subprocesses. Options set on the coverage run command line (such as
      --branch) wouldn't be communicated to the subprocesses. This could
      lead to combining failures, as described in issue 2021_. Now the entire
      configuration is used in subprocesses, regardless of its origin.

    • Added debug=patch to help diagnose problems.

  • Fix: really close all SQLite databases, even in-memory ones. Closes issue 2017_.

.. _issue 2017: #​2017
.. _issue 2021: #​2021
.. _issue 2022: #​2022
.. _issue 2024: #​2024
.. _issue 2025: #​2025

.. _changes_7-10-2:

v7.10.2

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  • Fix: some code with NOP bytecodes could report missing branches that are
    actually executed. This is now fixed, closing issue 1999_. Python 3.9
    still shows the problem.

.. _issue 1999: #​1999

.. _changes_7-10-1:

v7.10.1

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  • Fix: the exclusion for if TYPE_CHECKING: was wrong: it marked the branch
    as partial, but it should have been a line exclusion so the entire clause
    would be excluded. Improves issue 831_.

  • Fix: changed where .pth files are written for patch = subprocess, closing
    issue 2006_.

.. _issue 2006: #​2006

.. _changes_7-10-0:

v7.10.0

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  • A new configuration option: ":ref:config_run_patch" specifies named patches
    to work around some limitations in coverage measurement. These patches are
    available:

    • patch = _exit lets coverage save its data even when :func:os._exit() <python:os._exit> is used to abruptly end the process. This closes
      long-standing issue 310_ as well as its duplicates: issue 312, issue 1673, issue 1845, and issue 1941.

    • patch = subprocess measures coverage in Python subprocesses created
      with :mod:subprocess, :func:os.system, or one of the :func:execv <python:os.execl> or :func:spawnv <python:os.spawnl> family of
      functions. Closes old issue 367, its duplicate issue 378 and old
      issue 689_.

    • patch = execv adjusts the :func:execv <python:os.execl> family of
      functions to save coverage data before ending the current program and
      starting the next. Not available on Windows. Closes issue 43_ after 15
      years!

  • The HTML report now dimly colors subsequent lines in multi-line statements.
    They used to have no color. This gives a better indication of the amount of
    code missing in the report. Closes issue 1308_.

  • Two new exclusion patterns are part of the defaults: ... is automatically
    excluded as a line and if TYPE_CHECKING: is excluded as a branch. Closes
    issue 831_.

  • A new command-line option: --save-signal=USR1 specifies a signal that
    coverage.py will listen for. When the signal is sent, the coverage data will
    be saved. This makes it possible to save data from within long-running
    processes. Thanks, Arkady Gilinsky <pull 1998_>_.

  • A new configuration option: ":ref:config_report_partial_also" is a list of
    regexes to add as pragmas for partial branches. This parallels the
    ":ref:config_report_exclude_also" setting for adding line exclusion
    patterns.

  • A few file path configuration settings didn't allow for tilde expansion:
    :ref:config_json_output, :ref:config_lcov_output and
    :ref:config_run_debug_file. This is now fixed.

  • Wheels are included for 3.14 now that 3.14 rc1 is available.

  • We no longer ship a PyPy-specific wheel. PyPy will install the pure-Python
    wheel. Closes issue 2001_.

  • In the very unusual situation of not having a current frame, coverage no
    longer crashes when using the sysmon core, fixing issue 2005_.

.. _issue 43: #​43
.. _issue 310: #​310
.. _issue 312: #​312
.. _issue 367: #​367
.. _issue 378: #​378
.. _issue 689: #​689
.. _issue 831: #​831
.. _issue 1308: #​1308
.. _issue 1673: #​1673
.. _issue 1845: #​1845
.. _issue 1941: #​1941
.. _pull 1998: #​1998
.. _issue 2001: #​2001
.. _issue 2005: #​2005

.. _changes_7-9-2:

v7.9.2

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  • Fix: complex conditionals within a line might cause a KeyError when using
    sys.monitoring, as reported in issue 1991_. This is now fixed.

  • Fix: we can now measure coverage for code in Python archive (.par) files.
    Thanks, Itamer Oren <pull 1984_>_.

.. _pull 1984: #​1984
.. _issue 1991: #​1991

.. _changes_7-9-1:

v7.9.1

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  • The "no-ctracer" warning is not issued for Python pre-release versions.
    Coverage doesn't ship compiled wheels for those versions, so this was far too
    noisy.

  • On Python 3.14+, the "sysmon" core is now the default if it's supported for
    your configuration. Plugins and dynamic contexts are still not supported
    with it.

.. _changes_7-9-0:

v7.9.0

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  • Added a [run] core configuration setting to specify the measurement core,
    which was previously only available through the COVERAGE_CORE environment
    variable. Finishes issue 1746_.

  • Fixed incorrect rendering of f-strings with doubled braces, closing issue 1980_.

  • If the C tracer core can't be imported, a warning ("no-ctracer") is issued
    with the reason.

  • The C tracer core extension module now conforms to PEP 489, closing issue 1977. Thanks, Adam Turner <pull 1978_>_.

  • Fixed a "ValueError: min() arg is an empty sequence" error caused by strange
    empty modules, found by oss-fuzz_.

.. _issue 1746: #​1746
.. _issue 1977: #​1977
.. _pull 1978: #​1978
.. _issue 1980: #​1980
.. _PEP 489: https://peps.python.org/pep-0489
.. _oss-fuzz: https://google.github.io/oss-fuzz/

.. _changes_7-8-2:

v7.8.2

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  • Wheels are provided for Windows ARM64 on Python 3.11, 3.12, and 3.13.
    Thanks, Finn Womack <pull 1972_>_.

.. _issue 1971: #​1971
.. _pull 1972: #​1972

.. _changes_7-8-1:

v7.8.1

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  • A number of EncodingWarnings were fixed that could appear if you've enabled
    PYTHONWARNDEFAULTENCODING, fixing issue 1966. Thanks, Henry Schreiner <pull 1967_>.

  • Fixed a race condition when using sys.monitoring with free-threading Python,
    closing issue 1970_.

.. _issue 1966: #​1966
.. _pull 1967: #​1967
.. _issue 1970: #​1970

.. _changes_7-8-0:

v7.8.0

Compare Source

  • Added a new source_dirs setting for symmetry with the existing
    source_pkgs setting. It's preferable to the existing source setting,
    because you'll get a clear error when directories don't exist. Fixes issue 1942. Thanks, Jeremy Fleischman <pull 1943_>.

  • Fix: the PYTHONSAFEPATH environment variable new in Python 3.11 is properly
    supported, closing issue 1696. Thanks, Philipp A. <pull 1700_>. This
    works properly except for a detail when using the coverage command on
    Windows. There you can use python -m coverage instead if you need exact
    emulation.

.. _issue 1696: #​1696
.. _pull 1700: #​1700
.. _issue 1942: #​1942
.. _pull 1943: #​1943

.. _changes_7-7-1:

v7.7.1

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  • A few small tweaks to the sys.monitoring support for Python 3.14. Please
    test!

.. _changes_7-7-0:

v7.7.0

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  • The Coverage object has a new method, :meth:.Coverage.branch_stats for
    getting simple branch information for a module. Closes issue 1888_.

  • The :class:Coverage constructor<.Coverage> now has a plugins parameter
    for passing in plugin objects directly, thanks to Alex Gaynor <pull 1919_>_.

  • Many constant tests in if statements are now recognized as being optimized
    away. For example, previously if 13: would have been considered a branch
    with one path not taken. Now it is understood as always true and no coverage
    is missing.

  • The experimental sys.monitoring support now works for branch coverage if you
    are using Python 3.14.0 alpha 6 or newer. This should reduce the overhead
    coverage.py imposes on your test suite. Set the environment variable
    COVERAGE_CORE=sysmon to try it out.

  • Confirmed support for PyPy 3.11. Thanks Michał Górny.

.. _issue 1888: #​1888
.. _pull 1919: #​1919

.. _changes_7-6-12:

v7.6.12

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  • Fix: some aarch64 distributions were missing (issue 1927_). These are now
    building reliably.

.. _issue 1927: #​1927

.. _changes_7-6-11:

v7.6.11

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  • Fix: a memory leak in CTracer has been fixed. The details are in issue 1924_ and pytest-dev 676_. This should reduce the memory footprint for
    everyone even if it hadn't caused a problem before.

  • We now ship a py3-none-any.whl wheel file. Thanks, Russell Keith-Magee <pull 1914_>_.

.. _pull 1914: #​1914
.. _issue 1924: #​1924
.. _pytest-dev 676: pytest-dev/pytest-cov#676

.. _changes_7-6-10:

v7.6.10

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  • Fix: some descriptions of missing branches in HTML and LCOV reports were
    incorrect when multi-line statements were involved (issue 1874_ and issue 1875_). These are now fixed.

  • Fix: Python 3.14 defers evaluation of annotations <pep649_>_ by moving them
    into separate code objects. That code is rarely executed, so coverage.py
    would mark them as missing, as reported in issue 1908_. Now they are
    ignored by coverage automatically.

  • Fixed an obscure and mysterious problem on PyPy 3.10 seemingly involving
    mocks, imports, and trace functions: issue 1902_. To be honest, I don't
    understand the problem or the solution, but git bisect helped find it,
    and now it's fixed.

  • Docs: re-wrote the :ref:subprocess page to put multiprocessing first and to
    highlight the correct use of :class:multiprocessing.Pool <python:multiprocessing.pool.Pool>.

.. _issue 1874: #​1874
.. _issue 1875: #​1875
.. _issue 1902: #​1902
.. _issue 1908: #​1908
.. _pep649: https://docs.python.org/3.14/whatsnew/3.14.html#whatsnew314-pep649

.. _changes_7-6-9:

v7.6.9

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  • Fix: Tomas Uribe fixed <pull 1901_>_ a performance problem in the XML
    report. Large code bases should produce XML reports much faster now.

.. _pull 1901: #​1901

.. _changes_7-6-8:

v7.6.8

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  • Fix: the LCOV report code assumed that a branch line that took no branches
    meant that the entire line was unexecuted. This isn't true in a few cases:
    the line might always raise an exception, or might have been optimized away.
    Fixes issue 1896_.

  • Fix: similarly, the HTML report will now explain that a line that jumps to
    none of its expected destinations must have always raised an exception.
    Previously, it would say something nonsensical like, "line 4 didn't jump to
    line 5 because line 4 was never true, and it didn't jump to line 7 because
    line 4 was always true." This was also shown in issue 1896_.

.. _issue 1896: #​1896

.. _changes_7-6-7:

v7.6.7

Compare Source

  • Fix: ugh, the other assert from 7.6.5 can also be encountered in the wild,
    so it's been restored to a conditional. Sorry for the churn.

.. _changes_7-6-6:

v7.6.6

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  • One of the new asserts from 7.6.5 caused problems in real projects, as
    reported in issue 1891_. The assert has been removed.

.. _issue 1891: #​1891

.. _changes_7-6-5:

v7.6.5

Compare Source

  • Fix: fine-tuned the exact Python version (3.12.6) when exiting from with
    statements changed how they traced. This affected whether people saw the
    fix for issue 1880_.

  • Fix: isolate our code more from mocking in the os module that in rare cases
    can cause bizarre behavior <pytest-cov-666_>_.

  • Refactor: some code unreachable code paths in parser.py were changed to
    asserts. If you encounter any of these, please let me know!

.. _pytest-cov-666: pytest-dev/pytest-cov#666

.. _changes_7-6-4:


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