Lc @ s3 d Z d d k Z e i d j Z d d k Z d d k Z d d k Z d d k Z d d k Z d d k Z d d k
Z
d e f d YZ d e f d YZ
e o^ d d k l Z d d k Z d d k Z d d k Z d f d
YZ d f d YZ nF d d k Z e e d
Z d d k Z d d k Z e e d d Z d d d d d d g Z e o e i d n y e i d Z Wn
d Z n Xg Z d Z d Z! d Z" d Z# d Z$ d Z% d Z& d e' f d YZ( d Z) d Z* e+ d! j o e o e* n e) n d S(" s. subprocess - Subprocesses with accessible I/O streams
This module allows you to spawn processes, connect to their
input/output/error pipes, and obtain their return codes. This module
intends to replace several other, older modules and functions, like:
os.system
os.spawn*
os.popen*
popen2.*
commands.*
Information about how the subprocess module can be used to replace these
modules and functions can be found below.
Using the subprocess module
===========================
This module defines one class called Popen:
class Popen(args, bufsize=0, executable=None,
stdin=None, stdout=None, stderr=None,
preexec_fn=None, close_fds=False, shell=False,
cwd=None, env=None, universal_newlines=False,
startupinfo=None, creationflags=0):
Arguments are:
args should be a string, or a sequence of program arguments. The
program to execute is normally the first item in the args sequence or
string, but can be explicitly set by using the executable argument.
On UNIX, with shell=False (default): In this case, the Popen class
uses os.execvp() to execute the child program. args should normally
be a sequence. A string will be treated as a sequence with the string
as the only item (the program to execute).
On UNIX, with shell=True: If args is a string, it specifies the
command string to execute through the shell. If args is a sequence,
the first item specifies the command string, and any additional items
will be treated as additional shell arguments.
On Windows: the Popen class uses CreateProcess() to execute the child
program, which operates on strings. If args is a sequence, it will be
converted to a string using the list2cmdline method. Please note that
not all MS Windows applications interpret the command line the same
way: The list2cmdline is designed for applications using the same
rules as the MS C runtime.
bufsize, if given, has the same meaning as the corresponding argument
to the built-in open() function: 0 means unbuffered, 1 means line
buffered, any other positive value means use a buffer of
(approximately) that size. A negative bufsize means to use the system
default, which usually means fully buffered. The default value for
bufsize is 0 (unbuffered).
stdin, stdout and stderr specify the executed programs' standard
input, standard output and standard error file handles, respectively.
Valid values are PIPE, an existing file descriptor (a positive
integer), an existing file object, and None. PIPE indicates that a
new pipe to the child should be created. With None, no redirection
will occur; the child's file handles will be inherited from the
parent. Additionally, stderr can be STDOUT, which indicates that the
stderr data from the applications should be captured into the same
file handle as for stdout.
If preexec_fn is set to a callable object, this object will be called
in the child process just before the child is executed.
If close_fds is true, all file descriptors except 0, 1 and 2 will be
closed before the child process is executed.
if shell is true, the specified command will be executed through the
shell.
If cwd is not None, the current directory will be changed to cwd
before the child is executed.
If env is not None, it defines the environment variables for the new
process.
If universal_newlines is true, the file objects stdout and stderr are
opened as a text files, but lines may be terminated by any of '\n',
the Unix end-of-line convention, '\r', the Macintosh convention or
'\r\n', the Windows convention. All of these external representations
are seen as '\n' by the Python program. Note: This feature is only
available if Python is built with universal newline support (the
default). Also, the newlines attribute of the file objects stdout,
stdin and stderr are not updated by the communicate() method.
The startupinfo and creationflags, if given, will be passed to the
underlying CreateProcess() function. They can specify things such as
appearance of the main window and priority for the new process.
(Windows only)
This module also defines two shortcut functions:
call(*popenargs, **kwargs):
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):
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"])
Exceptions
----------
Exceptions raised in the child process, before the new program has
started to execute, will be re-raised in the parent. Additionally,
the exception object will have one extra attribute called
'child_traceback', which is a string containing traceback information
from the childs point of view.
The most common exception raised is OSError. This occurs, for
example, when trying to execute a non-existent file. Applications
should prepare for OSErrors.
A ValueError will be raised if Popen is called with invalid arguments.
check_call() will raise CalledProcessError, if the called process
returns a non-zero return code.
Security
--------
Unlike some other popen functions, this implementation will never call
/bin/sh implicitly. This means that all characters, including shell
metacharacters, can safely be passed to child processes.
Popen objects
=============
Instances of the Popen class have the following methods:
poll()
Check if child process has terminated. Returns returncode
attribute.
wait()
Wait for child process to terminate. Returns returncode attribute.
communicate(input=None)
Interact with process: Send data to stdin. Read data from stdout
and stderr, until end-of-file is reached. Wait for process to
terminate. The optional input argument should be a string to be
sent to the child process, or None, if no data should be sent to
the child.
communicate() returns a tuple (stdout, stderr).
Note: The data read is buffered in memory, so do not use this
method if the data size is large or unlimited.
The following attributes are also available:
stdin
If the stdin argument is PIPE, this attribute is a file object
that provides input to the child process. Otherwise, it is None.
stdout
If the stdout argument is PIPE, this attribute is a file object
that provides output from the child process. Otherwise, it is
None.
stderr
If the stderr argument is PIPE, this attribute is file object that
provides error output from the child process. Otherwise, it is
None.
pid
The process ID of the child process.
returncode
The child return code. A None value indicates that the process
hasn't terminated yet. A negative value -N indicates that the
child was terminated by signal N (UNIX only).
Replacing older functions with the subprocess module
====================================================
In this section, "a ==> b" means that b can be used as a replacement
for a.
Note: All functions in this section fail (more or less) silently if
the executed program cannot be found; this module raises an OSError
exception.
In the following examples, we assume that the subprocess module is
imported with "from subprocess import *".
Replacing /bin/sh shell backquote
---------------------------------
output=`mycmd myarg`
==>
output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
Replacing shell pipe line
-------------------------
output=`dmesg | grep hda`
==>
p1 = Popen(["dmesg"], stdout=PIPE)
p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
output = p2.communicate()[0]
Replacing os.system()
---------------------
sts = os.system("mycmd" + " myarg")
==>
p = Popen("mycmd" + " myarg", shell=True)
pid, sts = os.waitpid(p.pid, 0)
Note:
* Calling the program through the shell is usually not required.
* It's easier to look at the returncode attribute than the
exitstatus.
A more real-world example would look like this:
try:
retcode = call("mycmd" + " myarg", shell=True)
if retcode < 0:
print >>sys.stderr, "Child was terminated by signal", -retcode
else:
print >>sys.stderr, "Child returned", retcode
except OSError, e:
print >>sys.stderr, "Execution failed:", e
Replacing os.spawn*
-------------------
P_NOWAIT example:
pid = os.spawnlp(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg")
==>
pid = Popen(["/bin/mycmd", "myarg"]).pid
P_WAIT example:
retcode = os.spawnlp(os.P_WAIT, "/bin/mycmd", "mycmd", "myarg")
==>
retcode = call(["/bin/mycmd", "myarg"])
Vector example:
os.spawnvp(os.P_NOWAIT, path, args)
==>
Popen([path] + args[1:])
Environment example:
os.spawnlpe(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg", env)
==>
Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
Replacing os.popen*
-------------------
pipe = os.popen("cmd", mode='r', bufsize)
==>
pipe = Popen("cmd", shell=True, bufsize=bufsize, stdout=PIPE).stdout
pipe = os.popen("cmd", mode='w', bufsize)
==>
pipe = Popen("cmd", shell=True, bufsize=bufsize, stdin=PIPE).stdin
(child_stdin, child_stdout) = os.popen2("cmd", mode, bufsize)
==>
p = Popen("cmd", shell=True, bufsize=bufsize,
stdin=PIPE, stdout=PIPE, close_fds=True)
(child_stdin, child_stdout) = (p.stdin, p.stdout)
(child_stdin,
child_stdout,
child_stderr) = os.popen3("cmd", mode, bufsize)
==>
p = Popen("cmd", shell=True, bufsize=bufsize,
stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
(child_stdin,
child_stdout,
child_stderr) = (p.stdin, p.stdout, p.stderr)
(child_stdin, child_stdout_and_stderr) = os.popen4("cmd", mode,
bufsize)
==>
p = Popen("cmd", shell=True, bufsize=bufsize,
stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
(child_stdin, child_stdout_and_stderr) = (p.stdin, p.stdout)
On Unix, os.popen2, os.popen3 and os.popen4 also accept a sequence as
the command to execute, in which case arguments will be passed
directly to the program without shell intervention. This usage can be
replaced as follows:
(child_stdin, child_stdout) = os.popen2(["/bin/ls", "-l"], mode,
bufsize)
==>
p = Popen(["/bin/ls", "-l"], bufsize=bufsize, stdin=PIPE, stdout=PIPE)
(child_stdin, child_stdout) = (p.stdin, p.stdout)
Return code handling translates as follows:
pipe = os.popen("cmd", 'w')
...
rc = pipe.close()
if rc != None and rc % 256:
print "There were some errors"
==>
process = Popen("cmd", 'w', shell=True, stdin=PIPE)
...
process.stdin.close()
if process.wait() != 0:
print "There were some errors"
Replacing popen2.*
------------------
(child_stdout, child_stdin) = popen2.popen2("somestring", bufsize, mode)
==>
p = Popen(["somestring"], shell=True, bufsize=bufsize
stdin=PIPE, stdout=PIPE, close_fds=True)
(child_stdout, child_stdin) = (p.stdout, p.stdin)
On Unix, popen2 also accepts a sequence as the command to execute, in
which case arguments will be passed directly to the program without
shell intervention. This usage can be replaced as follows:
(child_stdout, child_stdin) = popen2.popen2(["mycmd", "myarg"], bufsize,
mode)
==>
p = Popen(["mycmd", "myarg"], bufsize=bufsize,
stdin=PIPE, stdout=PIPE, close_fds=True)
(child_stdout, child_stdin) = (p.stdout, p.stdin)
The popen2.Popen3 and popen2.Popen4 basically works as subprocess.Popen,
except that:
* subprocess.Popen raises an exception if the execution fails
* the capturestderr argument is replaced with the stderr argument.
* stdin=PIPE and stdout=PIPE must be specified.
* popen2 closes all filedescriptors by default, but you have to specify
close_fds=True with subprocess.Popen.
iNt win32t CalledProcessErrorc B s e Z d Z d Z d Z RS( s This exception is raised when a process run by check_call() returns
a non-zero exit status. The exit status will be stored in the
returncode attribute.c C s | | _ | | _ d S( N( t
returncodet cmd( t selfR R ( ( s /usr/lib/python2.6/subprocess.pyt __init__ s c C s d | i | i f S( Ns- Command '%s' returned non-zero exit status %d( R R ( R ( ( s /usr/lib/python2.6/subprocess.pyt __str__ s ( t __name__t
__module__t __doc__R R ( ( ( s /usr/lib/python2.6/subprocess.pyR s t TimeoutExpiredc B s e Z d Z RS( s] This exception is raised when the timeout expires while waiting for a
child process.
( R R R ( ( ( s /usr/lib/python2.6/subprocess.pyR
s ( t CREATE_NEW_CONSOLEt STARTUPINFOc B s& e Z d Z d Z d Z d Z d Z RS( i N( R R t dwFlagst Nonet hStdInputt
hStdOutputt hStdErrort wShowWindow( ( ( s /usr/lib/python2.6/subprocess.pyR s
t
pywintypesc B s e Z e Z RS( ( R R t IOErrort error( ( ( s /usr/lib/python2.6/subprocess.pyR s t pollt PIPE_BUFi t Popent PIPEt STDOUTt callt
check_callR t SC_OPEN_MAXi c C sp xi t D]` } | i d t i } | d j o8 | d j o+ y t i | Wqh t j
o qh Xq q Wd S( Nt
_deadstatei ( t _activet _internal_pollt syst maxintR t removet
ValueError( t instt res( ( s /usr/lib/python2.6/subprocess.pyt _cleanup s ic G sV xO t oG y | | SWq t j
o& } | i t i j o q n q Xq Wd S( N( t Truet OSErrort errnot EINTR( t funct argst e( ( s /usr/lib/python2.6/subprocess.pyt _eintr_retry_call s c O s~ | i d d } t | | } y, | d j o | i S| i d | SWn* t j
o | i | i n Xd S( s Run command with arguments. Wait for command to complete or
timeout, then return the returncode attribute.
The arguments are the same as for the Popen constructor. Example:
retcode = call(["ls", "-l"])
t timeoutN( t popR R t waitR
t kill( t popenargst kwargsR0 t p( ( s /usr/lib/python2.6/subprocess.pyR s
c O sW t | | } | i d } | d j o | d } n | o t | | n | S( sS 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"])
R- i N( R t getR R ( R4 R5 t retcodeR ( ( s /usr/lib/python2.6/subprocess.pyR s
c C sW g } t } x;| D]3} g } | o | i d n d | j p d | j p | } | o | i d n x | D] } | d j o | i | qw | d j o2 | i d t | d g } | i d qw | o | i | g } n | i | qw W| o | i | n | o | i | | i d q q Wd i | S( s
Translate a sequence of arguments into a command line
string, using the same rules as the MS C runtime:
1) Arguments are delimited by white space, which is either a
space or a tab.
2) A string surrounded by double quotation marks is
interpreted as a single argument, regardless of white space
contained within. A quoted string can be embedded in an
argument.
3) A double quotation mark preceded by a backslash is
interpreted as a literal double quotation mark.
4) Backslashes are interpreted literally, unless they
immediately precede a double quotation mark.
5) If backslashes immediately precede a double quotation mark,
every pair of backslashes is interpreted as a literal
backslash. If the number of backslashes is odd, the last
backslash escapes the next double quotation mark as
described in rule 3.
t s t "s \i s \"t ( t Falset appendt lent extendt join( t seqt resultt needquotet argt bs_buft c( ( s /usr/lib/python2.6/subprocess.pyt list2cmdline s8 !
c B s e Z d d d d d d e e d d e d d d
Z d Z e i e d Z d d d Z
d Z d Z d Z
e o| d Z d Z d
Z d Z d e i e i e i d Z d d
Z d Z d Z d Z d Z e Z n d Z d Z d Z d Z e i! e i" e i# e i$ d Z% d e i& e i' e i( d Z d d d Z d Z d Z) d Z* d Z d Z d Z RS( i c C s t t | _ d
| _ t | _ t | t t f p t d n t
o_ | d
j o t d n | o7 | d
j p | d
j p
| d
j o t d q n; |
d
j o t d n | d j o t d n d
| _ d
| _
d
| _ d
| _ d
| _ | | _ | i | | | \ } } } } } } | i | | | | |
| | |
| | | | | | | | t
o | d
j o t i | i d } n | d
j o t i | i d } n | d
j o t i | i d } qn | d
j o t i | d | | _ n | d
j o? | o t i | d | | _
qzt i | d | | _
n | d
j o? | o t i | d | | _ qt i | d | | _ n d
S( s Create new Popen instance.s bufsize must be an integers0 preexec_fn is not supported on Windows platformssS close_fds is not supported on Windows platforms if you redirect stdin/stdout/stderrs2 startupinfo is only supported on Windows platformsi s4 creationflags is only supported on Windows platformst wbt rUt rbN( R' R< t _child_createdR t _inputt _communication_startedt
isinstancet intt longt TypeErrort mswindowsR$ t stdint stdoutt stderrt pidR t universal_newlinest _get_handlest _execute_childt msvcrtt open_osfhandlet Detacht ost fdopen( R R- t bufsizet
executableRS RT RU t
preexec_fnt close_fdst shellt cwdt envRW t startupinfot
creationflagst p2creadt p2cwritet c2preadt c2pwritet errreadt errwrite( ( s /usr/lib/python2.6/subprocess.pyR D s\
!
'
c C s( | i d d } | i d d } | S( Ns
s
s
( t replace( R t data( ( s /usr/lib/python2.6/subprocess.pyt _translate_newlines s c C sQ | i p d S| i d | | i d j o | d j o | i | n d S( NR ( RK R R R R= ( R t _maxintR ( ( s /usr/lib/python2.6/subprocess.pyt __del__ s
c
C sy | i o | o t d n | d j o t i | } n d } | d j o'| i o | i | i | i g i d d j o d } d } | i ou | o] y | i i | Wqt j
o6 } | i
t
i j o | i
t
i j o q qXn | i i
nU | i o | i i } | i i
n+ | i o | i i } | i i
n | i | | f Sz | i | | \ } } Wd t | _ X| d j o d i | } n | d j o d i | } n | i oH t t d o8 | o | i | } n | o | i | } q7n | d j o | i } n | i d | i | } | | f S( s Interact with process: Send data to stdin. Read data from
stdout and stderr, until end-of-file is reached. Wait for
process to terminate. The optional input argument should be a
string to be sent to the child process, or None, if no data
should be sent to the child.
communicate() returns a tuple (stdout, stderr).
The optional "timeout" argument is a non-standard addition to
Python 2.6. If supplied, it is a number of seconds, which can be an
integer or a float (though there are no precision guarantees). A
TimeoutExpired exception will be raised after the given number of
seconds elapses, if the call has not yet returned.
s. Cannot send input after starting communicationi NR; t newlinesR0 ( RM R$ R t timeRS RT RU t countt writeR R* t EPIPEt EINVALt closet readR2 t _communicateR( R@ RW t hasattrt fileRp t _remaining_time( R t inputR0 t endtimeRT RU R. t sts( ( s /usr/lib/python2.6/subprocess.pyt communicate sR
(
&
c C s
| i S( N( R ( R ( ( s /usr/lib/python2.6/subprocess.pyR s c C s$ | d j o d S| t i Sd S( s5 Convenience for _communicate when computing timeouts.N( R Rt ( R R ( ( s /usr/lib/python2.6/subprocess.pyR~ s
c C s3 | d j o d St i | j o
t n d S( s2 Convenience for checking if a timeout has expired.N( R Rt R
( R R ( ( s /usr/lib/python2.6/subprocess.pyt _check_timeout s
c C s | d j o | d j o | d j o d Sd \ } } d \ } } d \ } } | d j o? t i t i } | d j o t i d d \ } }
q nb | t j o t i d d \ } } n9 t | t o t i | } n t i | i
} | i | } | d j o? t i t i } | d j o t i d d \ }
} qnb | t j o t i d d \ } } n9 t | t o t i | } n t i | i
} | i | } | d j o? t i t i
} | d j o t i d d \ }
} qny | t j o t i d d \ } } nP | t j o
| } n9 t | t o t i | } n t i | i
} | i | } | | | | | | f S( s| Construct and return tupel with IO objects:
p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
i N( NNNNNN( NN( NN( NN( R t _subprocesst GetStdHandlet STD_INPUT_HANDLEt
CreatePipeR RN RO RZ t
get_osfhandlet filenot _make_inheritablet STD_OUTPUT_HANDLEt STD_ERROR_HANDLER ( R RS RT RU Rh Ri Rj Rk Rl Rm t _( ( s /usr/lib/python2.6/subprocess.pyRX sP '
c C s+ t i t i | t i d d t i S( s2 Return a duplicate of handle, which is inheritablei i ( R t DuplicateHandlet GetCurrentProcesst DUPLICATE_SAME_ACCESS( R t handle( ( s /usr/lib/python2.6/subprocess.pyR I s c C s t i i t i i t i d d } t i i | pK t i i t i i t i d } t i i | p t d q n | S( s, Find and return absolut path to w9xpopen.exei s w9xpopen.exesZ Cannot locate w9xpopen.exe, which is needed for Popen to work with your shell or platform.(
R] t pathR@ t dirnameR t GetModuleFileNamet existsR! t exec_prefixt RuntimeError( R t w9xpopen( ( s /usr/lib/python2.6/subprocess.pyt _find_w9xpopenP s c
C s t | t i p t | } n | d j o
t } n d | | | f j o1 | i t i O_ | | _ | | _
| | _ n |
o | i t i O_ t i
| _ t i i d d } | d | } t i d j p t i i | i d j o- | i } d | | f } | t i O} q/n y> t i | | d d t | | | | | \ } } } } Wn' t i j
o } t | i n Xt | _ | | _ | | _! | i" | d j o | i" n | d j o | i" n | d j o | i" n d S( s$ Execute program (MS Windows version)t COMSPECs cmd.exes /c l s command.coms "%s" %sN(# RN t typest StringTypesRG R R R
R t STARTF_USESTDHANDLESR R R t STARTF_USESHOWWINDOWt SW_HIDER R] t environR7 t
GetVersionR t basenamet lowerR R t
CreateProcessRO R R t WindowsErrorR- R( RK t _handleRV t Close( R R- R` Ra Rb Rd Re RW Rf Rg Rc Rh Ri Rj Rk Rl Rm t comspecR t hpt htRV t tidR. ( ( s /usr/lib/python2.6/subprocess.pyRY a sN
c C sJ | i d j o3 | | i d | j o | | i | _ qC n | i S( s Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it can only refer to objects
in its local scope.
i N( R R R ( R R t _WaitForSingleObjectt _WAIT_OBJECT_0t _GetExitCodeProcess( ( s /usr/lib/python2.6/subprocess.pyR s c C s | d j o
t i } n t | d } | i d j oH t i | i | } | t i j o
t n t i | i | _ n | i S( sO Wait for child process to terminate. Returns returncode
attribute.i N(
R R t INFINITERO R t WaitForSingleObjectR t WAIT_TIMEOUTR
t GetExitCodeProcess( R R0 RB ( ( s /usr/lib/python2.6/subprocess.pyR2 s
c C s | i | i d S( N( R= Rz ( R t fht buffer( ( s /usr/lib/python2.6/subprocess.pyt
_readerthread s c C s0 | i oe t | d oT g | _ t i d | i d | i | i f | _ | i i t | i i n | i
oe t | d oT g | _ t i d | i d | i
| i f | _ | i i t | i i n | i
oh | d j oJ y | i
i | Wq?t j
o# } | i t i j o q;q?Xn | i
i n | i o7 | i i | i | | i i o
t qn | i
o7 | i i | i | | i i o
t qn d } d } | i o | i } | i i n | i
o | i } | i
i n | | f S( Nt _stdout_bufft targetR- t _stderr_buff( RT R| R t threadingt ThreadR t
stdout_threadt setDaemonR( t startRU R t
stderr_threadRS R Rv R R* Rw Ry R@ R~ t isAliveR
( R R R R. RT RU ( ( s /usr/lib/python2.6/subprocess.pyR{ sJ
c C s. | t i j o | i n
t d d S( s) Send a signal to the process
s$ Only SIGTERM is supported on WindowsN( t signalt SIGTERMt terminateR$ ( R t sig( ( s /usr/lib/python2.6/subprocess.pyt send_signal s c C s t i | i d d S( s# Terminates the process
i N( R t TerminateProcessR ( R ( ( s /usr/lib/python2.6/subprocess.pyR s c
C s_ d \ } } d \ } } d \ } } | d j o nJ | t j o t i \ } } n' t | t o
| } n
| i } | d j o nJ | t j o t i \ } } n' t | t o
| } n
| i } | d j o na | t j o t i \ } } n> | t j o
| } n' t | t o
| } n
| i } | | | | | | f S( s| Construct and return tupel with IO objects:
p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
N( NN( NN( NN( R R R] t pipeRN RO R R (
R RS RT RU Rh Ri Rj Rk Rl Rm ( ( s /usr/lib/python2.6/subprocess.pyRX s:
c C s\ y
t i } Wn t j
o
d } n Xt i | t i } t i | t i | | B d S( Ni ( t fcntlt
FD_CLOEXECt AttributeErrort F_GETFDt F_SETFD( R t fdt cloexec_flagt old( ( s /usr/lib/python2.6/subprocess.pyt _set_cloexec_flagG s
c C s( t i d | t i | d t d S( Ni i ( R] t
closeranget MAXFD( R t but( ( s /usr/lib/python2.6/subprocess.pyt
_close_fdsQ s c C s t | t i o
| g } n
t | } |
o) d d g | } | o | | d <q\ n | d j o | d } n t i \ } } zz| i | t i } t i
y t i | _ Wn | o t i
n n Xt | _ | i d j oMy| d j o t i | n |
d j o t i |
n | d j o t i | n t i | | d j o t i | d n | d j o t i | d n | d j o t i | d n | d j o | d j o t i | n | d j o$ | | d f j o t i | n | d j o' | | | d f j o t i | n | o | i d | n | d j o t i | n | o | n | d j o t i | | n t i | | | Wn\ t i \ } } } t i | | | } d i | | _ t i | t i | n Xt i d n | o t i
n Wd t i | X| d j o | d j o t i | n | d j o |
d j o t i | n | d j o | d j o t i | n t t i! | d
} Wd t i | X| d j og t t i" | i d t i# | } x5 | |
| f D]$ } | d j o t i | q^q^W| n d S( s Execute program (POSIX version)s /bin/shs -ci i i R R; i Ni ( i ($ RN R R t listR R] R R t gct isenabledt disablet forkRV t enableR( RK Ry t dup2R t chdirt execvpt execvpeR! t exc_infot tracebackt format_exceptionR@ t child_tracebackRv t picklet dumpst _exitR/ Rz t waitpidt loads( R R- R` Ra Rb Rd Re RW Rf Rg Rc Rh Ri Rj Rk Rl Rm t errpipe_readt
errpipe_writet gc_was_enabledt exc_typet exc_valuet tbt exc_linesRo t child_exceptionR ( ( s /usr/lib/python2.6/subprocess.pyRY V s
#
c C sQ | | o | | | _ n- | | o | | | _ n
t d d S( Ns Unknown child exit status!( R R ( R R t _WIFSIGNALEDt _WTERMSIGt
_WIFEXITEDt _WEXITSTATUS( ( s /usr/lib/python2.6/subprocess.pyt _handle_exitstatus s
c C s | i d j oq y= | | i | \ } } | | i j o | i | n Wq | j
o! | d j o
| | _ q} q Xn | i S( s Check if child process has terminated. Returns returncode
attribute.
This method is called by __del__, so it cannot reference anything
outside of the local scope (nor can any methods it calls).
N( R R RV R ( R R t _waitpidt _WNOHANGt _os_errorRV R ( ( s /usr/lib/python2.6/subprocess.pyR s
c C sE | i d j o | i S| d j o t i | } d } x t o t t i | i t i \ } } | | i j p | d j p t | | i j o | i
| Pn | t i } | d j o
t n t | d | d } t i
| q> Wn@ | i d j o/ t t i | i d \ } } | i
| n | i S( s Wait for child process to terminate. Returns returncode
attribute.
The optional "timeout" argument is a non-standard addition to
Python 2.6. If supplied, it is a number of seconds, which can be
an integer or a float (though there are no precision guarantees).
A TimeoutExpired exception will be raised after the given number of
seconds elapses, if the call has not yet returned.
gMb@?i i g?N( R R Rt R( R/ R] R RV t WNOHANGt AssertionErrorR R
t mint sleep( R R0 R t delayRV R t remaining( ( s /usr/lib/python2.6/subprocess.pyR2 s,
$
c C sI | i o4 | i o) | i i | p | i i q> n t o | i | | \ } } n | i | | \ } } | d j o d i | } n | d j o d i | } n | i oH t
t d o8 | o | i | } n | o | i | } q n | d j o | i
n | i
d | i | | | f S( NR; Rs R0 ( RS RM t flushRy t _has_pollt _communicate_with_pollt _communicate_with_selectR R@ RW R| R} Rp R2 R~ ( R R R RT RU ( ( s /usr/lib/python2.6/subprocess.pyR{ s(
c s d } d } i p
h _ n t i f d } f d } i o | o | i t i n i pU h _ i o g i i i <n i
o g i i
i <q n t i t i B} i o* | i | i i i } n i
o* | i
| i i
i } n i
p d _ | _
n x i oy i i | } Wn9 t i j
o* } | i d t i j o qun n X i | x| D]\ }
} | t i @o i
i i t !} y i t i |
| 7_ Wn9 t j
o- } | i t i j o | |
q qX i t i
j o | |
qq| | @o? t i |
d }
|
p | |
n i |
i |
q| |
qWquW| | f S( Nc s- i | i | | i | i <d S( N( t registerR t _fd2file( t file_objt eventmask( R t poller( s /usr/lib/python2.6/subprocess.pyt register_and_appendH s c s2 i | i | i i i | d S( N( t
unregisterR Ry R1 ( R ( R R ( s /usr/lib/python2.6/subprocess.pyt close_unregister_and_removeL s
i i ( R RM R t selectR RS t POLLOUTt
_fd2outputRT R RU t POLLINt POLLPRIRL t
_input_offsetR~ R R- R* R+ R t _PIPE_BUFR] Rv R) Rw R> Rz R= ( R R R RT RU R R t select_POLLIN_POLLPRIt readyR. R t modet chunkRo ( ( R R s /usr/lib/python2.6/subprocess.pyR @ sl
c
C s | i p g | _ g | _ | i o | o | i i | i n | i o | i i | i n | i o | i i | i q n | i p | | _ d | _ n d } d } | i o$ | i p
g | _
n | i
} n | i o$ | i p
g | _ n | i } n x| i p
| i ok| i | } y+ t
i
| i | i g | \ } } } Wn9 t
i j
o* } | i d t i j o qn n X| i | | p | p | p
t n | i | j o | i | i | i t !}
y t i | i i |
} WnO t j
oC } | i t i j o$ | i i | i i | i q qX| i | 7_ | i t | i j o$ | i i | i i | i qn | i | j o] t i | i i d } | d j o$ | i i | i i | i n | i | n | i | j o] t i | i i d } | d j o$ | i i | i i | i n | i | qqW| | f S( Ni i R; ( RM t _read_sett
_write_setRS R= RT RU RL R R R R R~ R R R- R* R+ R R
R R] Rv R R) Rw Ry R# R> Rz (
R R R RT RU R t rlistt wlistt xlistR. R t
bytes_writtenRo ( ( s /usr/lib/python2.6/subprocess.pyR s~
c C s t i | i | d S( s) Send a signal to the process
N( R] R3 RV ( R R ( ( s /usr/lib/python2.6/subprocess.pyR s c C s | i t i d S( s/ Terminate the process with SIGTERM
N( R R R ( R ( ( s /usr/lib/python2.6/subprocess.pyR s c C s | i t i d S( s* Kill the process with SIGKILL
N( R R t SIGKILL( R ( ( s /usr/lib/python2.6/subprocess.pyR3 s N(+ R R R R< R Rp R! R" R Rr R R R~ R RR RX R R RY R R t
WAIT_OBJECT_0R R R2 R R{ R R R3 R R R] t WIFSIGNALEDt WTERMSIGt WIFEXITEDt WEXITSTATUSR R R R R R ( ( ( s /usr/lib/python2.6/subprocess.pyR C sT R M 9 N 4
-
$ % M N c C s. t d g d t i d } d GH| GHt i d j o& t d g d d } | i n d GHt d g d t } t d
d g d | i d t } t | i d GHHd
GHy t d g i GHWnJ t j
o> } | i t i
j o d GHd GH| i GHq*d G| i GHn Xt i
d IJd S( Nt psRT i s
Process list:t idRa c S s
t i d S( id ( R] t setuid( ( ( s /usr/lib/python2.6/subprocess.pyt <lambda> s s Looking for 'hda'...t dmesgt grept hdaRS s Trying a weird file...s /this/path/does/not/exists' The file didn't exist. I thought so...s Child traceback:t Errors Gosh. No error.( R R R R] t getuidR2 RT t reprR) R* t ENOENTR R! RU ( t plistR6 t p1t p2R. ( ( s /usr/lib/python2.6/subprocess.pyt _demo_posix s* ! c C sl d GHt d d t d t } t d d | i d t } t | i d GHd GHt d } | i d S(
Ns% Looking for 'PROMPT' in set output...t setRT Rc s
find "PROMPT"RS i s Executing calc...t calc( R R R( RT R) R R2 ( R, R- R6 ( ( s /usr/lib/python2.6/subprocess.pyt
_demo_windows s t __main__(, R R! t platformRR R] R R R R R* Rt t ExceptionR R
R R R RZ R R R R| R R R t getattrR t __all__R= t sysconfR R R' R R R/ R R RG t objectR R. R1 R ( ( ( s /usr/lib/python2.6/subprocess.pyt <module>y s`
F )
y~or5J ={Eeu磝Qk ᯘG{?+]ן?wM3X^歌>{7پK>on\jy R g/=fOroNVv~Y+ NGuÝHWyw[eQʨSb> >}Gmx[o[<{Ϯ_qF vM IENDB`
