Describe *text* as an alias for *universal_newlines* in more places that people are likely to be referred to.
(cherry picked from commit e14c010378)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Fixes the documentation for `subprocess.check_output()` not mentioning that the encoding and errors parameters were added in 3.6.
(cherry picked from commit fc1ce810f1)
Co-authored-by: Brice Gros <brice-gros@users.noreply.github.com>
Even though Python marks any handles it opens as non-inheritable there
is still a race when using `subprocess.Popen` since creating a process
with redirected stdio requires temporarily creating inheritable handles.
By implementing support for `subprocess.Popen(close_fds=True)` we fix
this race.
In order to implement this we use PROC_THREAD_ATTRIBUTE_HANDLE_LIST
which is available since Windows Vista. Which allows to pass an explicit
list of handles to inherit when creating a process.
This commit also adds `STARTUPINFO.lpAttributeList["handle_list"]`
which can be used to control PROC_THREAD_ATTRIBUTE_HANDLE_LIST
directly.
Improve human friendliness of the Popen API: Add text=False as a
keyword-only argument to subprocess.Popen along with a Popen
attribute .text_mode and set this based on the
encoding/errors/universal_newlines/text arguments.
The universal_newlines parameter and attribute are maintained for
backwards compatibility.
The `subprocess.getstatusoutput` API was inadvertently changed
in Python 3.3.4. Document the change, it is too late to undo the
API change now as it has shipped in many stable releases.
Partially clarify the subprocess convenience API documentation by
explicitly listing the `cwd` parameter in their abbreviated signatures.
While this has been merged as an improvement, it doesn't fully
resolve the issue, as the `cwd` should also be covered in the
"Frequently Used Arguments" section, and the fact these APIs
pass unlisted keyword arguments down to the lower level APIs
is currently still unclear.
The Windows-specific subprocess.STARTUPINFO class now accepts
keyword-only arguments to its constructor to set the various
data attributes.
Patch by Subhendu Ghosh.
