[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Steve Dower]

Changes by Steve Dower :


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resolution:  -> third party
stage:  -> resolved
status: open -> closed

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Eryk Sun]

Changes by Eryk Sun :


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Removed message: http://bugs.python.org/msg284186

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[A.B., Khalid]

A.B., Khalid added the comment:

OK. I updated pyreadline to version 2.1 from version 2.0 and now the buggy 
behavior is gone.

"""
E:\>python
Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:53:40) [MSC v.1500 64 bit 
(AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
"""

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Rüdiger Jungbeck]

Rüdiger Jungbeck added the comment:

Replacing pyreadline 2.0 with pyreadline 2.1 solved my problems

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Steve Dower]

Steve Dower added the comment:

pyreadline is probably the problem. Try uninstalling or updating it.

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Eryk Sun]

Eryk Sun added the comment:

You have pyreadline installed, a 3rd party module that takes over reading from 
the console. Try disabling it temporarily by deleting 
"E:\Python27\lib\site-packages\readline.pyc" and renaming 
"E:\Python27\lib\site-packages\readline.py" to "readline.py.bak".

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[A.B., Khalid]

A.B., Khalid added the comment:

Output of SET PY is as follows:

E:\>SET PY
PYSDL2_DLL_PATH=E:\Python27\Lib\site-packages
PYTHON3_HOME=E:\Python35
PYTHON_HOME=E:\Python27

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Tim Golden]

Tim Golden added the comment:

Do you have any Python environment variables set?

If you're not sure, try at a command prompt:

SET PY

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[A.B., Khalid]

A.B., Khalid added the comment:

I enclose the output of "python -v". Where Python exits is of course indicated 
by the end of the file. However, there is no obvious error that is printed out.

Also it might be worthwhile to note that I cleared all compiled files left over 
from the previous Python (2.7.12) so as to make sure none of them was the cause 
of the problem. That unfortunately did not affect the buggy behavior.

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Added file: http://bugs.python.org/file46064/python-v.txt

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Steve Dower]

Steve Dower added the comment:

Running "python -v" might show what the last thing it tried to do before 
exiting was.

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[A.B., Khalid]

A.B., Khalid added the comment:

Running "where python" shows that the updated python (the one with the bug 
mentioned above) is the one being run.

Running python -c "import sys; print sys.stdin.isatty()" prints out "True".

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Eryk Sun]

Eryk Sun added the comment:

In the cmd shell, run `where python` to confirm that "python" runs 2.7 
python.exe, and not a python.bat or python.lnk file. Also, check whether stdin 
is an interactive terminal by running `python -c "import sys; print 
sys.stdin.isatty()"`.

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nosy: +eryksun

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[Rüdiger Jungbeck]

Rüdiger Jungbeck added the comment:

I have the same problem (on 2 different systems) with the win32 version in 
Windows 10.

The problem seems to go away when I start python -S so it has something to do 
with site.py

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nosy: +ruediger.jungb...@rsj.de

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[issue29037] Python 2.7.13 prints version header and exits immediately on Windows 10 x64

[A.B., Khalid]

New submission from A.B., Khalid:

I updated my Python 2.7.12 to 2.7.13 on Windows 10 x64. When I run it in 
Windows command prompt shell, Python prints the version header and then exits 
immediately. Like so:

"""
E:\Users\thisuser>python
Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:53:40) [MSC v.1500 64 bit 
(AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

E:\Users\thisuser>
"""

This did not happen before.

The same happens when Python is run from a powershell. I have no problems 
running ipython or jupyter notebook, however. And Python does the right thing 
when run under MSYS2, like so:

"""
$ python -i
Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:53:40) [MSC v.1500 64 bit 
(AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
"""

Could this be an encoding problem? Because MSYS2 is fairly new and I think it 
might be more friendly to the encoding issues related to Windows shell 
programming.

--
components: Windows
messages: 283773
nosy: abkhd, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Python 2.7.13 prints version header and exits immediately on Windows 10 
x64
versions: Python 2.7

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