…H-7993)

The 'wikipedia' example is now 'rosette', describing what it draws.
The 'penrose' print output is reduced.  The 'tree' '1024'
output is eliminated.

…H-7998)

…GH-3918)

)

Fix passing lists and tuples of strings containing special characters
'"', '\\', '{', '}' and '\n' as options to tkinter.ttk widgets.

* `flags` is indeed deprecated, but there is a validation on its value for
  backwards compatibility reasons.  This adds mention of this in the docs.
* The docs say that `sizehint` is deprecated and ignored, but it is still
  used when `epoll_create1()` is unavailable. This adds mention of this in
  the docs.
* `sizehint=-1` is acceptable again, and is replaced with `FD_SETSIZE-1`.
  This is needed to have a default value available at the Python level,
  since `FD_SETSIZE` is not exposed to Python. (see: bpo-31938)
* Reject `sizehint=0` since it is invalid to pass on to `epoll_create()`.

The relevant tests have also been updated.

They can be exposed when some C API calls fail due to lack of
memory.

* Failed Py_BuildValue() could cause an assertion error in the
  following TextIOWrapper.tell().
* input_chunk could be decrefed twice in TextIOWrapper.seek()
  after failed Py_BuildValue().
* initvalue could leak in StringIO.__getstate__() after failed
  PyDict_Copy().

Using OptiPNG 0.7.7.
Used command is: `find . -name '*.png' | xargs optipng -o7`

…pythonGH-8008)

)

 The line-length limit is not needed because the pages appear in a separate app rather
 than on a browser tab.  It can also interact badly with the DPI setting.

When hunting memory leaks using -R 3:3, test_imap_unordered() of
test_multiprocessing leaks randomly a few memory blocks. It is a
false alarm: when testing using -R 3:20 for example, no leak is
detected.

Modify test_imap_unordered() to be closer to test_imap():

* Only test 10 numbers instead of 1000: it's a pool of 4 processes, so
  10 is enough to test at least one number per process
* Use chunksize=100 instead of chunksize=53 to mimick test_imap()

The Opera Browser was using a outdated command line invocation that resulted in an incorrect URL being opened in the browser when requested using the webbrowser module.

* Correct the arguments passed to the Opera Browser when opening a new URL.

…itive. (pythonGH-8042)

…ythonGH-7918)

PyErr_Print() will not return when the exception is a SystemExit, so
decref the __main__ module object in that case.

Without tp_clear, GC can't break cyclic reference.
It will cause memory leak when cyclic reference is
created intentionally.

PyErr_Print() always clears the error indicator, so there is no need
to call PyErr_Clear() immediately afterwards.

…-8674)

…ant. (pythonGH-8646)

posixmodule.c always declares environ, so don't bother catching a NameError in os.py.

Co-authored-by: Antti Haapala <antti.haapala@anttipatterns.com>

Get insync with master before making modifications