7.15.4

Version 7.15.4 — 2026-08-06

• Fix: in the HTML report, a source file name containing a double quote (legal on POSIX) wasn’t escaped where it’s dropped into the href of the index and prev/next links, so it could close the attribute early and inject markup. Page URLs are now escaped. Thanks, Rajath Mohare.
• Fix: the LCOV report wrote file names and other fields into its line-oriented records without neutralizing control characters. A measured file whose name contained a newline (legal on POSIX) could forge extra records, inflating the coverage seen by tools that read the report. Control characters in a field are now replaced. Thanks, Rajath Mohare.
• Wheels are now provided for Python 3.15.

➡️  PyPI page: coverage 7.15.4.
➡️  To install: python3 -m pip install coverage==7.15.4

7.15.3

Version 7.15.3 — 2026-08-02

• Fix: the sysmon core is incompatible with dynamic contexts. Previously, the combination would be prevented when read from the coverage.py configuration. But using the context API as pytest-cov does, contexts would be silently dropped. Now a warning is issued, thanks to Jisang Han. Closes issue 2200.
• A performance improvement in the low-level line number bookkeeping when combining data files, thanks to Kevin Turcios.
• Performance improvement in HTML reporting by reducing the number of times files have to be parsed, thanks to Kevin Turcios.

➡️  PyPI page: coverage 7.15.3.
➡️  To install: python3 -m pip install coverage==7.15.3

7.15.2

Version 7.15.2 — 2026-07-15

• Fix: one of the performance improvements in 7.15.1 (pull 2215) dramatically increased memory use during reporting for large projects. Now we use a different approach that is both faster and slimmer than 7.15.0. Fixes issue 2229.

➡️  PyPI page: coverage 7.15.2.
➡️  To install: python3 -m pip install coverage==7.15.2

7.15.1

Version 7.15.1 — 2026-07-12

• Fix: in the HTML report with show_contexts enabled, a context label containing </script> (for example a parametrized pytest node id) could close the inline <script> element in a file page early, injecting markup. Context labels are now fully escaped. Thanks, Rajath Mohare.
• A number of performance improvements thanks to Paul Kehrer, in pull requests 2213, 2214, 2215, 2216, 2218, 2220, and 2221.

➡️  PyPI page: coverage 7.15.1.
➡️  To install: python3 -m pip install coverage==7.15.1

7.15.0

Version 7.15.0 — 2026-07-02

• Since 7.14.0, reporting commands implicitly combine parallel data files. Now those commands have a new option --keep-combined to retain the data files after combining them instead of the default, which is to delete them. Finishes issue 2198.
• Fix: the LCOV report would incorrectly count excluded functions as uncovered, as described in issue 2205. This is now fixed thanks to Martin Kuntz Jacobsen.
• When running your program, coverage now correctly sets yourmodule.__spec__.loader as strongly recommended, avoiding the deprecation warning described in issue 2208. Thanks, A5rocks.
• Fix: with Python 3.10, running with the -I (isolated mode) option didn’t correctly omit the current directory from the module search path, as described in issue 2103. That is now fixed thanks to Ilia Sorokin.

➡️  PyPI page: coverage 7.15.0.
➡️  To install: python3 -m pip install coverage==7.15.0

7.14.3

Version 7.14.3 — 2026-06-22

• Fix: the default ... exclusion rule now also matches function bodies whose closing return-type bracket is on its own line (for example, after a long -> dict[ ... ] annotation that a formatter has split over multiple lines). Closes issue 2185, thanks Mengjia Shang.
• Fix: On 3.13t, we incorrectly issued Couldn't import C tracer errors. We can’t import the C tracer because in 7.14.2 we stopped shipping compiled wheels for 3.13t. Thanks, Hugo van Kemenade.

➡️  PyPI page: coverage 7.14.3.
➡️  To install: python3 -m pip install coverage==7.14.3

7.14.2

Version 7.14.2 — 2026-06-20

• Fix: some messages were being written to stdout, making coverage json -o - useless for capturing JSON output. Now messages are written to stderr, fixing issue 2197.
• Fix: CoverageData kept one SQLite connection per thread that recorded coverage, but never closed them when those threads terminated. On long runs with many short-lived threads this leaked one file descriptor per dead thread, eventually failing with OSError: [Errno 24] Too many open files. Connections belonging to terminated threads are now closed and dropped. Fixes issue 2192. Thanks, Matthew Lloyd.
• Fix: when using sys.monitoring, we were assuming we could use the COVERAGE_ID tool id. But other tools might also assume they could use that id. Pre-allocated ids don’t really make sense, so now we search for a usable one instead. Fixes issue 2187.
• Following the advice of cibuildwheel, we no longer distribute wheels for Python 3.13 free-threaded.

➡️  PyPI page: coverage 7.14.2.
➡️  To install: python3 -m pip install coverage==7.14.2

7.14.1

Version 7.14.1 — 2026-05-26

• Fix: the HTML report used typographic niceties to make file paths more readable by adding a small amount of space around slashes. Those spaces interfered with searching the page for file paths of interest. Now the report uses CSS to accomplish the same visual tweak so that searches with slashes work correctly. Closes issue 2170.
• Add a 3.16 PyPI classifier since we test on the 3.16 main branch.

➡️  PyPI page: coverage 7.14.1.
➡️  To install: python3 -m pip install coverage==7.14.1

7.14.0

Version 7.14.0 — 2026-05-10

• Feature: now when running one of the reporting commands, if there are parallel data files that need combining, they will be implicitly combined before creating the report. There is no option to avoid the combination; let us know if you have a use case that requires it. Thanks, Tim Hatch. Closes issue 1781.
• Fix: the output from combine was too verbose, listing each file considered. Now it shows a single line with the counts of files combined, files skipped, and files with errors. The -q flag suppresses this line. The old detailed lines are available with the new --debug=combine option.
• Fix: running a Python file through a symlink now sets the sys.path correctly, matching regular Python behavior. Fixes issue 2157.
• Fix: Collector.flush_data could fail with “RuntimeError: Set changed size during iteration” when a tracer in another thread added a line to the per-file set that add_lines (or add_arcs) was iterating. The values passed to CoverageData are now snapshotted via dict.copy() and set.copy(), which are atomic under the GIL. Thanks, Alex Vandiver.
• Fix: the soft keyword lazy is now bolded in HTML reports.
• We are no longer testing eventlet support. Eventlet started issuing stern deprecation warnings that break our tests. Our support code is still there.

➡️  PyPI page: coverage 7.14.0.
➡️  To install: python3 -m pip install coverage==7.14.0

7.13.5

Version 7.13.5 — 2026-03-17

• Fix: issue 2138 describes a memory leak that happened when repeatedly using the Coverage API with in-memory data. This is now fixed.
• Fix: the markdown-formatted coverage report didn’t fully escape special characters in file paths (issue 2141). This would be very unlikely to cause a problem, but now it’s done properly, thanks to Ellie Ayla.
• Fix: the C extension wouldn’t build on VS2019, but now it does (issue 2145).

➡️  PyPI page: coverage 7.13.5.
➡️  To install: python3 -m pip install coverage==7.13.5