ValueError: need more than 2 values to unpack

[Allan Lei]

I get this error for any commands I run.

• Windows 7 Pro 64
• Python 2.7.6 (default, Nov 10 2013, 19:24:24) [MSC v.1500 64 bit (AMD64)] on win32
• pip install sarge==0.1.2

Simple run

sarge.run('echo abc')

Trying the test_sarge.py script from repo

PS C:\Users\allan.lei\Desktop> python test_sarge.py
E.EEEEE.E...EEE..EEEEEEEE....EException in thread Thread-3:
Traceback (most recent call last):
  File "C:\Python27\lib\threading.py", line 810, in __bootstrap_inner
    self.run()
  File "C:\Python27\lib\threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1055, in run_node
    result = getattr(self, method)(node, input, async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1201, in run_command_node
    node.cmd.run(input=input, async=async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 593, in run
    self.process = p = Popen(self.args, **self.kwargs)
  File "C:\Python27\lib\subprocess.py", line 701, in __init__
    errread, errwrite), to_close = self._get_handles(stdin, stdout, stderr)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 481, in _get_handles
    stderr)
ValueError: need more than 2 values to unpack

Exception in thread Thread-4:
Traceback (most recent call last):
  File "C:\Python27\lib\threading.py", line 810, in __bootstrap_inner
    self.run()
  File "C:\Python27\lib\threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1055, in run_node
    result = getattr(self, method)(node, input, async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1289, in run_list_node
    self.run_node(curr, input, async=use_async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1055, in run_node
    result = getattr(self, method)(node, input, async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 1201, in run_command_node
    node.cmd.run(input=input, async=async)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 593, in run
    self.process = p = Popen(self.args, **self.kwargs)
  File "C:\Python27\lib\subprocess.py", line 701, in __init__
    errread, errwrite), to_close = self._get_handles(stdin, stdout, stderr)
  File "C:\Python27\lib\site-packages\sarge\__init__.py", line 481, in _get_handles
    stderr)
ValueError: need more than 2 values to unpack

[Vinay Sajip]

I can't reproduce this: see the screenshot below.

Did you ensure that echo.exe from the GnuWin32 coreutils package is available, as mentioned in the note in the docs here?

[Allan Lei]

Yes. Tried both methods of putting it in the same execution directory and adding to PATH. Also tried echo abc from ipython. All work fine.

[Vinay Sajip]

It looks as if Python 2.7.6 changed how the Popen._get_handles method works. Do you know if it works with 2.7.5?

[Vinay Sajip]

I have committed a potential fix in changeset 5a4c641. Is it possible for you to install this revision and see if it fixes the problem? I don't have a 2.7.6 installation on Windows which I can test with.

[Allan Lei]

Works on the original machine too!

[Vinay Sajip]

Fixed in changeset 5a4c641.

[Vinay Sajip]

Issue #18 was marked as a duplicate of this issue.

[Ram Rachum]

I hope a release is made soon so Sarge would be usable to me.

[Vinay Sajip]

I've just released sarge 0.1.3 on PyPI, which incorporates this fix.

[Ram Rachum]

Thanks!