diff options
Diffstat (limited to 'Lib/subprocess.py')
| -rw-r--r-- | Lib/subprocess.py | 46 |
1 files changed, 22 insertions, 24 deletions
diff --git a/Lib/subprocess.py b/Lib/subprocess.py index 20ced68..e729db4 100644 --- a/Lib/subprocess.py +++ b/Lib/subprocess.py @@ -1,6 +1,6 @@ # subprocess - Subprocesses with accessible I/O streams # -# For more information about this module, see PEP 324. +# For more information about this module, see PEP 324. # # Copyright (c) 2003-2004 by Peter Astrand <astrand@lysator.liu.se> # @@ -174,7 +174,7 @@ communicate(input=None) terminate. The optional stdin 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 @@ -262,7 +262,7 @@ except OSError, e: Replacing os.spawn* ------------------- -P_NOWAIT example: +P_NOWAIT example: pid = os.spawnlp(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg") ==> @@ -276,21 +276,21 @@ retcode = os.spawnlp(os.P_WAIT, "/bin/mycmd", "mycmd", "myarg") retcode = call(["/bin/mycmd", "myarg"]) -Vector example: +Vector example: os.spawnvp(os.P_NOWAIT, path, args) ==> Popen([path] + args[1:]) -Environment example: +Environment example: os.spawnlpe(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg", env) ==> Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"}) -Replacing os.popen* +Replacing os.popen* ------------------- pipe = os.popen(cmd, mode='r', bufsize) ==> @@ -352,7 +352,7 @@ except that: * 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. + close_fds=True with subprocess.Popen. """ @@ -468,10 +468,10 @@ def list2cmdline(seq): for c in arg: if c == '\\': - # Don't know if we need to double yet. + # Don't know if we need to double yet. bs_buf.append(c) elif c == '"': - # Double backspaces. + # Double backspaces. result.append('\\' * len(bs_buf)*2) bs_buf = [] result.append('\\"') @@ -482,7 +482,7 @@ def list2cmdline(seq): bs_buf = [] result.append(c) - # Add remaining backspaces, if any. + # Add remaining backspaces, if any. if bs_buf: result.extend(bs_buf) @@ -513,7 +513,7 @@ class Popen(object): if creationflags != 0: raise ValueError("creationflags is only supported on Windows platforms") - self.stdin = None + self.stdin = None self.stdout = None self.stderr = None self.pid = None @@ -534,7 +534,7 @@ class Popen(object): # are file descriptors on both platforms. The parent objects # are None when not using PIPEs. The child objects are None # when not redirecting. - + (p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite) = self._get_handles(stdin, stdout, stderr) @@ -558,7 +558,7 @@ class Popen(object): self.stderr = os.fdopen(errread, 'rU', bufsize) else: self.stderr = os.fdopen(errread, 'rb', bufsize) - + _active.append(self) @@ -578,7 +578,7 @@ class Popen(object): """ if stdin == None and stdout == None and stderr == None: return (None, None, None, None, None, None) - + p2cread, p2cwrite = None, None c2pread, c2pwrite = None, None errread, errwrite = None, None @@ -651,7 +651,7 @@ class Popen(object): "for Popen to work with your shell or platform.") return w9xpopen - + def _execute_child(self, args, executable, preexec_fn, close_fds, cwd, env, universal_newlines, startupinfo, creationflags, shell, @@ -685,7 +685,7 @@ class Popen(object): if startupinfo == None: startupinfo = STARTUPINFO() if not None in (p2cread, c2pwrite, errwrite): - startupinfo.dwFlags |= STARTF_USESTDHANDLES + startupinfo.dwFlags |= STARTF_USESTDHANDLES startupinfo.hStdInput = p2cread startupinfo.hStdOutput = c2pwrite startupinfo.hStdError = errwrite @@ -724,7 +724,7 @@ class Popen(object): if errwrite != None: errwrite.Close() - + def poll(self): """Check if child process has terminated. Returns returncode attribute.""" @@ -830,7 +830,7 @@ class Popen(object): c2pwrite = stdout else: # Assuming file-like object - c2pwrite = stdout.fileno() + c2pwrite = stdout.fileno() if stderr == None: pass @@ -867,8 +867,8 @@ class Popen(object): os.close(i) except: pass - - + + def _execute_child(self, args, executable, preexec_fn, close_fds, cwd, env, universal_newlines, startupinfo, creationflags, shell, @@ -976,7 +976,7 @@ class Popen(object): _active.remove(self) - + def poll(self): """Check if child process has terminated. Returns returncode attribute.""" @@ -1022,7 +1022,7 @@ class Popen(object): self.stdin.close() if self.stdout: read_set.append(self.stdout) - stdout = [] + stdout = [] if self.stderr: read_set.append(self.stderr) stderr = [] @@ -1137,5 +1137,3 @@ if __name__ == "__main__": _demo_windows() else: _demo_posix() - - |