How to use _execute_child method in robotframework-androidlibrary

Best Python code snippet using robotframework-androidlibrary_python

__init__.py

Source:__init__.py

1#2# Copyright 2012 Red Hat, Inc.3#4# This program is free software; you can redistribute it and/or modify5# it under the terms of the GNU General Public License as published by6# the Free Software Foundation; either version 2 of the License, or7# (at your option) any later version.8#9# This program is distributed in the hope that it will be useful,10# but WITHOUT ANY WARRANTY; without even the implied warranty of11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12# GNU General Public License for more details.13#14# You should have received a copy of the GNU General Public License15# along with this program; if not, write to the Free Software16# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA17#18# Refer to the README and COPYING files for full details of the license19#20"""21Python's implementation of Popen forks back to python before execing.22Forking a python proc is a very complex and volatile process.23This is a simpler method of execing that doesn't go back to python after24forking. This allows for faster safer exec.25"""26import inspect27import os28import sys29from subprocess import Popen, PIPE30from cpopen import createProcess31SUPPORTS_RESTORE_SIGPIPE = (32    'restore_sigpipe' in inspect.getargspec(Popen.__init__).args33)34class CPopen(Popen):35    def __init__(self, args, close_fds=False, cwd=None, env=None,36                 deathSignal=0, childUmask=None,37                 stdin=PIPE, stdout=PIPE, stderr=PIPE,38                 restore_sigpipe=False):39        if not isinstance(args, list):40            args = list(args)41        self._childUmask = childUmask42        self._deathSignal = int(deathSignal)43        if SUPPORTS_RESTORE_SIGPIPE:44            kw = {'restore_sigpipe': restore_sigpipe}45        else:46            kw = {}47        Popen.__init__(self, args,48                       close_fds=close_fds, cwd=cwd, env=env,49                       stdin=stdin, stdout=stdout,50                       stderr=stderr,51                       **kw)52    def _execute_child_v276(53            self, args, executable, preexec_fn, close_fds,54            cwd, env, universal_newlines,55            startupinfo, creationflags, shell, to_close,56            p2cread, p2cwrite,57            c2pread, c2pwrite,58            errread, errwrite,59            restore_sigpipe=False60    ):61        return self._execute_child_v275(62            args, executable, preexec_fn,63            close_fds, cwd, env, universal_newlines,64            startupinfo, creationflags, shell,65            p2cread, p2cwrite,66            c2pread, c2pwrite,67            errread, errwrite,68            restore_sigpipe=restore_sigpipe,69            _to_close=to_close70        )71    def _execute_child_v275(72            self, args, executable, preexec_fn, close_fds,73            cwd, env, universal_newlines,74            startupinfo, creationflags, shell,75            p2cread, p2cwrite,76            c2pread, c2pwrite,77            errread, errwrite,78            restore_sigpipe=False,79            _to_close=None80    ):81        if env is not None and not isinstance(env, list):82            env = list(("=".join(item) for item in env.iteritems()))83        if _to_close is None:84            _to_close = self._fds_to_close(p2cread, p2cwrite,85                                           c2pread, c2pwrite,86                                           errread, errwrite)87        def close_fd(fd):88            _to_close.remove(fd)89            os.close(fd)90        try:91            pid, stdin, stdout, stderr = createProcess(92                args, close_fds,93                p2cread or -1, p2cwrite or -1,94                c2pread or -1, c2pwrite or -1,95                errread or -1, errwrite or -1,96                cwd, env,97                self._deathSignal,98                self._childUmask,99                restore_sigpipe100            )101            self.pid = pid102        except:103            # Keep the original exception and reraise it after all fds are104            # closed, ignoring error during close. This is needed only for105            # Python 2.6, as Python 2.7 already does this when _execute_child106            # raises.107            t, v, tb = sys.exc_info()108            for fd in list(_to_close):109                try:110                    close_fd(fd)111                except OSError:112                    pass113            raise t, v, tb114        # If child was started, close the unused fds on the parent side. Note115        # that we don't want to hide exceptions here.116        for fd in (p2cread, c2pwrite, errwrite):117            if fd in _to_close:118                close_fd(fd)119    def _fds_to_close(self, p2cread, p2cwrite,120                      c2pread, c2pwrite,121                      errread, errwrite):122        """123        Return a set of fds owned by us and may be closed for version of Python124        that do not provide the to_close argument in _execute_child.125        When calling Popen with PIPE, we create new pipe, and both sides of the126        pipe may be closed.127        When calling Popen with existing file descriptor or file like object,128        one side of the pipe will be None, and we may not close the other129        side, since it belongs to the caller.130        """131        to_close = set()132        for fdpair in ((p2cread, p2cwrite),133                       (c2pread, c2pwrite),134                       (errread, errwrite)):135            if None not in fdpair:136                to_close.update(fdpair)137        return to_close138    if 'to_close' in inspect.getargspec(Popen._execute_child).args:139        _execute_child = _execute_child_v276140    else:...

win_subprocess.py

Source:win_subprocess.py

...87                pi.dwProcessId, pi.dwThreadId)88    raise WinError()89class Popen(subprocess.Popen):90    """This superseeds Popen and corrects a bug in cPython 2.7 implem"""91    def _execute_child(self, args, executable, preexec_fn, close_fds,92                       cwd, env, universal_newlines,93                       startupinfo, creationflags, shell, to_close,94                       p2cread, p2cwrite,95                       c2pread, c2pwrite,96                       errread, errwrite):97        """Code from part of _execute_child from Python 2.7 (9fbb65e)98        There are only 2 little changes concerning the construction of99        the the final string in shell mode: we preempt the creation of100        the command string when shell is True, because original function101        will try to encode unicode args which we want to avoid to be able to102        sending it as-is to ``CreateProcess``.103        """104        if not isinstance(args, subprocess.types.StringTypes):105            args = subprocess.list2cmdline(args)106        if startupinfo is None:107            startupinfo = subprocess.STARTUPINFO()108        if shell:109            startupinfo.dwFlags |= _subprocess.STARTF_USESHOWWINDOW110            startupinfo.wShowWindow = _subprocess.SW_HIDE111            comspec = os.environ.get("COMSPEC", unicode("cmd.exe"))112            args = unicode('{} /c "{}"').format(comspec, args)113            if (_subprocess.GetVersion() >= 0x80000000 or114                    os.path.basename(comspec).lower() == "command.com"):115                w9xpopen = self._find_w9xpopen()116                args = unicode('"%s" %s') % (w9xpopen, args)117                creationflags |= _subprocess.CREATE_NEW_CONSOLE118        super(Popen, self)._execute_child(args, executable,119            preexec_fn, close_fds, cwd, env, universal_newlines,120            startupinfo, creationflags, False, to_close, p2cread,121            p2cwrite, c2pread, c2pwrite, errread, errwrite)...

README.py

Source:README.py

...4Image.open('twitterkey.png')5print(pytesseract.image_to_string(Image.open('twitterkey.png')))6'''Error7  File "c:\users\hknmz\appdata\local\programs\python\python38\lib\subprocess.py", line 854, in __init__8    self._execute_child(args, executable, preexec_fn, close_fds,9  File "c:\users\hknmz\appdata\local\programs\python\python38\lib\subprocess.py", line 1307, in _execute_child10    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,11PermissionError: [WinError 5] EriÅim engellendi...

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