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� N)� py3compatc � � ddl } | j � S # t $ r$}|j |j k7 r� Y d}~yd}~ww xY w)z�Read from a pipe ignoring EINTR errors.
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running in the background, often interrupts are raised that stop the
command from completing.r N)�errno�read�IOError�EINTR)�pr �errs �?/usr/lib/python3/dist-packages/IPython/utils/_process_common.py�read_no_interruptr s? � � ���v�v�x��� � � �9�9�� � � #� � $���s � � A�>�Ac �" � t j j � t j j � t j dk7 }t | t � }d}|r8t j dk( r%dt j v rt j d }t j | ||t j t j ||�� } ||� }|j �! |j! � |j# � |j � |j' � |S |S # t $ rL t d� t j j � t j j � d}Y ��w xY w# t$ $ r Y ��w xY w# t$ $ r Y |S w xY w# |j �1 |j! � |j# � n# t$ $ r Y nw xY w|j �! |j' � w # t$ $ r Y w w xY ww xY w)a� Open a command in a shell subprocess and execute a callback.
This function provides common scaffolding for creating subprocess.Popen()
calls. It creates a Popen object and then calls the callback with it.
Parameters
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cmd : str or list
A command to be executed by the system, using :class:`subprocess.Popen`.
If a string is passed, it will be run in the system shell. If a list is
passed, it will be used directly as arguments.
callback : callable
A one-argument function that will be called with the Popen object.
stderr : file descriptor number, optional
By default this is set to ``subprocess.PIPE``, but you can also pass the
value ``subprocess.STDOUT`` to force the subprocess' stderr to go into
the same file descriptor as its stdout. This is useful to read stdout
and stderr combined in the order they are generated.
Returns
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The return value of the provided callback is returned.
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A command to be executed in the system shell.
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output : str
A string containing the combination of stdout and stderr from the
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file descriptors (so the order of the information in this string is the
correct order as would be seen if running the command in a terminal).
c �( � | j � d S )Nr �� communicate�r s r �<lambda>zgetoutput.<locals>.<lambda>� s � �� � � ��);� � � )r, r �STDOUTr �decode)r) r+ s r � getoutputr7 p s2 � � �#� ;�Z�=N�=N�
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Accepts the same arguments as os.system().
Parameters
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cmd : str or list
A command to be executed in the system shell.
Returns
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stdout : str
stderr : str
N� )�get_output_error_code)r) s r �getoutputerrorr; � s � � !�� %�b�q� )�)r3 c � � t | d� � \ }}|�dd|j fS |\ }}t j |� t j |� |j fS )aE Return (standard output, standard error, return code) of executing cmd
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cmd : str or list
A command to be executed in the system shell.
Returns
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stdout : str
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function, but with a default of posix=False for splitting, so that quotes
in inputs are respected.
if strict=False, then any errors shlex.split would raise will result in the
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