56     def __init__(self, args, stdin=None, stdout=PIPE_PTY, stderr=PIPE_PTY,  argument
83         super(Popen, self).__init__(args, stdin=stdin,
95             self.stdout = os.fdopen(stdout_pty[0])
97             self.stderr = os.fdopen(stderr_pty[0])
103     def CommunicateFilter(self, output):  argument
149         if self.stdin:
152             self.stdin.flush()
154                 write_set.append(self.stdin)
156                 self.stdin.close()
157         if self.stdout:
158             read_set.append(self.stdout)
160         if self.stderr and self.stderr != self.stdout:
161             read_set.append(self.stderr)
175                     self.terminate()
177             if self.stdin in wlist:
182                 bytes_written = os.write(self.stdin.fileno(), chunk)
185                     self.stdin.close()
186                     write_set.remove(self.stdin)
188             if self.stdout in rlist:
192                     data = os.read(self.stdout.fileno(), 1024)
196                     self.stdout.close()
197                     read_set.remove(self.stdout)
203             if self.stderr in rlist:
207                     data = os.read(self.stderr.fileno(), 1024)
211                     self.stderr.close()
212                     read_set.remove(self.stderr)
234         if self.universal_newlines and hasattr(file, 'newlines'):
236                 stdout = self._translate_newlines(stdout)
238                 stderr = self._translate_newlines(stderr)
240         self.wait()
254         def __init__(self, input_to_send=None):  argument
261             self.stdout_data = ''
262             self.stderr_data = ''
263             self.combined_data = ''
264             self.stdin_pipe = None
265             self._input_to_send = input_to_send
268                 self.stdin_read_pipe = pipe[0]
269                 self._stdin_write_pipe = os.fdopen(pipe[1], 'w')
271         def Output(self, stream, data):  argument
274                 self.stdout_data += data
276                 self.stderr_data += data
277             self.combined_data += data
280             if self._input_to_send:
281                 self._stdin_write_pipe.write(self._input_to_send + '\r\n')
282                 self._stdin_write_pipe.flush()
284     def _BasicCheck(self, plist, oper):  argument
286         self.assertEqual(plist[0], oper.stdout_data)
287         self.assertEqual(plist[1], oper.stderr_data)
288         self.assertEqual(plist[2], oper.combined_data)
291         self.assertEqual(len(plist[0]) + len(plist[1]), len(plist[2]))
293     def test_simple(self):  argument
297         self._BasicCheck(plist, oper)
299     def test_stderr(self):  argument
304         self._BasicCheck(plist, oper)
305         self.assertEqual(plist [0], 'bad\r\n')
306         self.assertEqual(plist [1], 'fred\r\n')
308     def test_shell(self):  argument
312         self.assertRaises(OSError, Popen, [cmd], shell=False)
314         self._BasicCheck(plist, oper)
315         self.assertEqual(len(plist [0]), 0)
316         self.assertEqual(plist [1], 'test\r\n')
318     def test_list_args(self):  argument
323         self._BasicCheck(plist, oper)
324         self.assertEqual(plist [0], ' '.join(cmd[1:]) + '\r\n')
325         self.assertEqual(len(plist [1]), 0)
332         self._BasicCheck(plist, oper)
333         self.assertEqual(plist [0], '\r\n')
335     def test_cwd(self):  argument
340             self._BasicCheck(plist, oper)
341             self.assertEqual(plist [0], '/tmp\r\n')
343     def test_env(self):  argument
352             self._BasicCheck(plist, oper)
353             self.assertEqual(plist [0], add and 'fred\r\n' or '\r\n')
355     def test_extra_args(self):  argument
357         self.assertRaises(ValueError, Popen, 'true', close_fds=False)
359     def test_basic_input(self):  argument
371         self._BasicCheck(plist, oper)
372         self.assertEqual(len(plist [1]), 0)
373         self.assertEqual(plist [0], prompt + 'Hello Flash\r\r\n')
375     def test_isatty(self):  argument
384         self._BasicCheck(plist, oper)
385         self.assertEqual(plist [0], 'terminal 1\r\n')
386         self.assertEqual(plist [1], 'terminal 2\r\n')
392         self._BasicCheck(plist, oper)
393         self.assertEqual(plist [0], 'not 1\n')
394         self.assertEqual(plist [1], 'not 2\n')