The test currently fails with the following error:
$ PYTHONPATH=$(pwd)/tests:$PYTHONPATH python3 -m unittest -v log_handler_test
...
test_logrecordfactory (log_handler_test.LogRecordFactoryTest.test_logrecordfactory) ... --- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.12/logging/__init__.py", line 464, in format
return self._format(record)
^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 460, in _format
return self._fmt % values
~~~~~~~~~~^~~~~~~~
KeyError: 'custom_attribute'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.12/logging/__init__.py", line 1160, in emit
msg = self.format(record)
^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 999, in format
return fmt.format(record)
^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 999, in format
return fmt.format(record)
^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 706, in format
s = self.formatMessage(record)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 675, in formatMessage
return self._style.format(record)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/logging/__init__.py", line 466, in format
raise ValueError('Formatting field not found in record: %s' % e)
ValueError: Formatting field not found in record: 'custom_attribute'
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Fixes warning seen during packaging operations
```
➜ mitogen git:(master) ✗ uv build --sdist
Building source distribution...
...
!!
********************************************************************************
Please consider removing the following classifiers in favor of a SPDX license expression:
License :: OSI Approved :: BSD License
See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
********************************************************************************
!!
self._finalize_license_expression()
running egg_info
...
```
Previously the command size could very depanding on the current username, hostname, and process pid.
Before
```
SSH command size: 759
Preamble (mitogen.core + econtext) size: 18227 (17.80KiB)
...
```
After
SSH command size: 755
Preamble (mitogen.core + econtext) size: 18227 (17.80KiB)
...
```
This replaces `mitogen.master.scan_code_imports()` with
`mitogen.imports.codeobj_imports()`. The Python 3.x implementation now uses
`str.find()`, relying on Python >= 3.6 "widecode" format. Behaviour and
semantics should be unchanged. Now implementations are approx
- 1.5 x faster on Python 2.x
- 2 - 3 x faster on Python 3.x
Before
```console
$ ./tests/bench/scan_code
scan_code_imports python2.7 100 loops, best of 3: 3.19 msec per loop
scan_code_imports python3.9 500 loops, best of 5: 685 usec per loop
scan_code_imports python3.10 500 loops, best of 5: 727 usec per loop
scan_code_imports python3.11 500 loops, best of 5: 601 usec per loop
scan_code_imports python3.12 500 loops, best of 5: 609 usec per loop
scan_code_imports python3.13 500 loops, best of 5: 586 usec per loop
```
After
```console
codeobj_imports python2.7 1000 loops, best of 3: 1.98 msec per loop
codeobj_imports python3.9 1000 loops, best of 5: 302 usec per loop
codeobj_imports python3.10 1000 loops, best of 5: 297 usec per loop
codeobj_imports python3.11 1000 loops, best of 5: 243 usec per loop
codeobj_imports python3.12 1000 loops, best of 5: 278 usec per loop
codeobj_imports python3.13 1000 loops, best of 5: 259 usec per loop
```
```console
$ uname -a
Darwin kintha 24.6.0 Darwin Kernel Version 24.6.0: Mon Jul 14 11:30:29 PDT
2025; root:xnu-11417.140.69~1/RELEASE_ARM64_T6000 arm64
```
```console
$ ./tests/bench/scan_code
scan_code_imports python2.7 100 loops, best of 3: 3.19 msec per loop
scan_code_imports python3.9 500 loops, best of 5: 685 usec per loop
scan_code_imports python3.10 500 loops, best of 5: 727 usec per loop
scan_code_imports python3.11 500 loops, best of 5: 601 usec per loop
scan_code_imports python3.12 500 loops, best of 5: 609 usec per loop
scan_code_imports python3.13 500 loops, best of 5: 586 usec per loop
```
This covers existing behaviours of `mitogen.master.scan_code_imports()` some
of which are relied on, some not, but regardless weren't tested. Notably
- Explicit relative imports return level > 0
- Imports inside `class` and `def` are excluded
- Imports inside other blocks are included
- Python 3.x prunes impossible if/else branches (previously unknown)
It also
- Decouples the test results from the implementation details of the unit test.
- Fixes a missing import
- Fixes at least one Python 2.4 incompatibility (use of with block)
Mitogen was leaving the stdout and stderr of subprocesses in non-blocking
mode. When Python code ran in the remote process created by Mitogen calls such
as `print(long_string)` or `os.stout.write(bigger_than_the_buffer)` sometimes
raised `BlockingIOError`, or similar.
This change
- Removes code in `mitogen.core.Side` that set blocking/non-blocking mode
- Adds blocking/non-blocking control to `os.mitogen.pipe()` and a new
function `mitogen.core.socketpair()`
- Replaces `mitogen.core.set_block` and `mitogen.core.set_nonblock`
with `mitogen.core.set_blocking`, mirroring `os.set_blocking`
- Updates call sites as appropriate
- Adds tests for new functions and arguments
- Adds a regression test for subprocess stdio blocking/non-blocking
fixes#712
Marc Hartmayer