Module fastsubprocess

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_subprocess - Subprocesses with accessible I/O non-blocking file descriptors

Faster revision of subprocess-like module.

Classes

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CalledProcessError
This exception is raised when a process run by check_call() returns a non-zero exit status.

Popen
A faster Popen

Functions

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_cleanup()

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call(*popenargs, **kwargs)
Run command with arguments.

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check_call(*popenargs, **kwargs)
Run command with arguments.

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set_nonblock_flag(fd)
Set non blocking flag to file descriptor fd

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Variables

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MAXFD = 1024

_active = []

PIPE = -1

STDOUT = -2

__package__ = 'ClusterShell.Worker'

Function Details

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call(*popenargs, **kwargs)

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Run command with arguments. Wait for command to complete, then return the returncode attribute.

The arguments are the same as for the Popen constructor. Example:

retcode = call(["ls", "-l"])

check_call(*popenargs, **kwargs)

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Run command with arguments. Wait for command to complete. If the exit code was zero then return, otherwise raise CalledProcessError. The CalledProcessError object will have the return code in the returncode attribute.

The arguments are the same as for the Popen constructor. Example:

check_call(["ls", "-l"])