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Merged revisions 55225-55227,55229-55269 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk ................ r55238 | guido.van.rossum | 2007-05-10 16:46:05 -0700 (Thu, 10 May 2007) | 9 lines Merged revisions 55227 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r55227 | guido.van.rossum | 2007-05-10 10:20:15 -0700 (Thu, 10 May 2007) | 2 lines Fix a bug in test_c_api() that caused a negative refcount. ........ ................ r55246 | neal.norwitz | 2007-05-11 00:01:52 -0700 (Fri, 11 May 2007) | 1 line Remove commands.getstatus() it is obsolete. ................ r55248 | neal.norwitz | 2007-05-11 00:29:05 -0700 (Fri, 11 May 2007) | 2 lines Remove bsddb185 support. ................ r55249 | neal.norwitz | 2007-05-11 00:29:50 -0700 (Fri, 11 May 2007) | 1 line Remove bsddb185 module too ................ r55250 | neal.norwitz | 2007-05-11 00:32:13 -0700 (Fri, 11 May 2007) | 1 line bsddb185: Gotta remove from the file checked in, not Setup ................ r55251 | neal.norwitz | 2007-05-11 00:53:26 -0700 (Fri, 11 May 2007) | 1 line Remove obsolete IRIX modules (as much as I could find, there is probably more) ................ r55252 | neal.norwitz | 2007-05-11 00:55:35 -0700 (Fri, 11 May 2007) | 1 line Remove SGI turd. ................ r55254 | georg.brandl | 2007-05-11 03:11:01 -0700 (Fri, 11 May 2007) | 2 lines Add a case for set comprehensions to the "cannot assign to" switch. ................ r55255 | georg.brandl | 2007-05-11 03:11:25 -0700 (Fri, 11 May 2007) | 2 lines Fix wrong imports. ................ r55261 | georg.brandl | 2007-05-11 07:37:48 -0700 (Fri, 11 May 2007) | 2 lines Remove removed tex files. ................ r55262 | georg.brandl | 2007-05-11 08:28:41 -0700 (Fri, 11 May 2007) | 2 lines Commit PEP 3132 implementation. ................ r55264 | georg.brandl | 2007-05-11 08:50:19 -0700 (Fri, 11 May 2007) | 2 lines Check in the inevitable AST version number and format Py_ssize_t with %zd. ................ r55265 | neal.norwitz | 2007-05-11 09:12:22 -0700 (Fri, 11 May 2007) | 1 line Remove mention of os.popen* and popen2.* since these will be removed. ................ r55266 | neal.norwitz | 2007-05-11 09:19:57 -0700 (Fri, 11 May 2007) | 1 line Get doc to build again (almost, the doc is fine) ................ r55267 | neal.norwitz | 2007-05-11 09:21:02 -0700 (Fri, 11 May 2007) | 1 line Really get doc to build (remove use of string module) ................ r55269 | neal.norwitz | 2007-05-11 09:29:43 -0700 (Fri, 11 May 2007) | 1 line Add some notes to cleanup later ................
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57 changed files with 842 additions and 22519 deletions
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@ -17,8 +17,6 @@ intends to replace several other, older modules and functions, like:
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os.system
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os.spawn*
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os.popen*
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popen2.*
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commands.*
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Information about how the subprocess module can be used to replace these
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@ -283,73 +281,6 @@ Environment example:
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os.spawnlpe(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg", env)
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==>
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Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
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Replacing os.popen*
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-------------------
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pipe = os.popen(cmd, mode='r', bufsize)
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==>
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pipe = Popen(cmd, shell=True, bufsize=bufsize, stdout=PIPE).stdout
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pipe = os.popen(cmd, mode='w', bufsize)
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==>
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pipe = Popen(cmd, shell=True, bufsize=bufsize, stdin=PIPE).stdin
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(child_stdin, child_stdout) = os.popen2(cmd, mode, bufsize)
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==>
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p = Popen(cmd, shell=True, bufsize=bufsize,
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stdin=PIPE, stdout=PIPE, close_fds=True)
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(child_stdin, child_stdout) = (p.stdin, p.stdout)
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(child_stdin,
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child_stdout,
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child_stderr) = os.popen3(cmd, mode, bufsize)
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==>
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p = Popen(cmd, shell=True, bufsize=bufsize,
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stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
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(child_stdin,
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child_stdout,
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child_stderr) = (p.stdin, p.stdout, p.stderr)
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(child_stdin, child_stdout_and_stderr) = os.popen4(cmd, mode, bufsize)
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==>
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p = Popen(cmd, shell=True, bufsize=bufsize,
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stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
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(child_stdin, child_stdout_and_stderr) = (p.stdin, p.stdout)
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Replacing popen2.*
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------------------
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Note: If the cmd argument to popen2 functions is a string, the command
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is executed through /bin/sh. If it is a list, the command is directly
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executed.
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(child_stdout, child_stdin) = popen2.popen2("somestring", bufsize, mode)
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==>
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p = Popen(["somestring"], shell=True, bufsize=bufsize
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stdin=PIPE, stdout=PIPE, close_fds=True)
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(child_stdout, child_stdin) = (p.stdout, p.stdin)
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(child_stdout, child_stdin) = popen2.popen2(["mycmd", "myarg"], bufsize, mode)
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==>
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p = Popen(["mycmd", "myarg"], bufsize=bufsize,
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stdin=PIPE, stdout=PIPE, close_fds=True)
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(child_stdout, child_stdin) = (p.stdout, p.stdin)
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The popen2.Popen3 and popen3.Popen4 basically works as subprocess.Popen,
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except that:
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* subprocess.Popen raises an exception if the execution fails
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* the capturestderr argument is replaced with the stderr argument.
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* stdin=PIPE and stdout=PIPE must be specified.
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* popen2 closes all filedescriptors by default, but you have to specify
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close_fds=True with subprocess.Popen.
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"""
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import sys
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