Create a subprocess.

The *limit* argument sets the buffer limit for:class:`StreamReader`

wrappers for:attr:`Process.stdout` and:attr:`Process.stderr`

wrappers for:attr:`~asyncio.subprocess.Process.stdout` and:attr:`~asyncio.subprocess.Process.stderr`

(if:const:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).

Return a:class:`~asyncio.subprocess.Process` instance.

Run the *cmd* shell command.

The *limit* argument sets the buffer limit for:class:`StreamReader`

wrappers for:attr:`Process.stdout` and:attr:`Process.stderr`

wrappers for:attr:`~asyncio.subprocess.Process.stdout` and:attr:`~asyncio.subprocess.Process.stderr`

(if:const:`subprocess.PIPE` is passed to *stdout* and *stderr* arguments).

Return a:class:`~asyncio.subprocess.Process` instance.

If *PIPE* is passed to *stdin* argument, the

:attr:`Process.stdin <asyncio.subprocess.Process.stdin>` attribute

will point to a:class:`StreamWriter` instance.

will point to a:class:`~asyncio.StreamWriter` instance.

If *PIPE* is passed to *stdout* or *stderr* arguments, the

:attr:`Process.stdout <asyncio.subprocess.Process.stdout>` and

:attr:`Process.stderr <asyncio.subprocess.Process.stderr>`

attributes will point to:class:`StreamReader` instances.

attributes will point to:class:`~asyncio.StreamReader` instances.

..data::asyncio.subprocess.STDOUT

An object that wraps OS processes created by the

:func:`create_subprocess_exec` and:func:`create_subprocess_shell`

:func:`~asyncio.create_subprocess_exec` and:func:`~asyncio.create_subprocess_shell`

functions.

This class is designed to have a similar API to the

Kill the child process.

On POSIX systems this method sends:py:data:`SIGKILL` to the child

On POSIX systems this method sends:py:data:`~signal.SIGKILL` to the child

process.

On Windows this method is an alias for:meth:`terminate`.

..attribute::stdin

Standard input stream (:class:`StreamWriter`) or ``None``

Standard input stream (:class:`~asyncio.StreamWriter`) or ``None``

if the process was created with ``stdin=None``.

..attribute::stdout

Standard output stream (:class:`StreamReader`) or ``None``

Standard output stream (:class:`~asyncio.StreamReader`) or ``None``

if the process was created with ``stdout=None``.

..attribute::stderr

Standard error stream (:class:`StreamReader`) or ``None``

Standard error stream (:class:`~asyncio.StreamReader`) or ``None``

if the process was created with ``stderr=None``.

..warning::

Process identification number (PID).

Note that for processes created by the:func:`create_subprocess_shell`

Note that for processes created by the:func:`~asyncio.create_subprocess_shell`

function, this attribute is the PID of the spawned shell.

..attribute::returncode

Doc/library/ast.rst

Doc/library/asyncio-extending.rst

Doc/library/asyncio-policy.rst

Doc/library/asyncio-subprocess.rst

Doc/library/decimal.rst

Doc/library/email.charset.rst

Doc/library/email.compat32-message.rst