Kernel dies and can't report errors because of failure to read stderr file

[waranzkomodom]

Description of your problem

Hi, I am a very inexperienced user, I launched spyder to learn write one of my first, very simple programs, but i repeatedly, once each several seconds, get message:

WARNING:traitlets:kernel died: 3.0
Traceback (most recent call last):
File "C:\Users\Wojtek\Anaconda2\lib\site-packages\spyder\widgets\ipythonconsole\client.py", line 357, in kernel_restarted_message
stderr = codecs.open(self.stderr_file, 'r', encoding='utf-8').read()
File "C:\Users\Wojtek\Anaconda2\lib\codecs.py", line 686, in read
return self.reader.read(size)
File "C:\Users\Wojtek\Anaconda2\lib\codecs.py", line 492, in read
newchars, decodedbytes = self.decode(data, self.errors)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xbf in position 2136: invalid start byte

What steps will reproduce the problem?

1. It happens just after opening spyder
2. It keeps turning to internal console to show this message, so i'm in fact unable to use spyder

What is the expected output? What do you see instead?

Please provide any additional information below

Versions and main components

• Spyder Version: 3.1.3
• Python Version: 2.7
• Qt Version: 5.6.2
• PyQt Version: 5.6.0
• Operating system: windows 7

Dependencies

Please go to the menu entry Help > Optional Dependencies (or
Help > Dependencies), press the button Copy to clipboard
and paste the contents below:

jedi =0.9.0 : 0.9.0 (OK)
matplotlib >=1.0 : 2.0.0 (OK)
nbconvert >=4.0 : 4.2.0 (OK)
numpy >=1.7 : 1.11.3 (OK)
pandas >=0.13.1 : 0.19.2 (OK)
pep8 >=0.6 : 1.7.0 (OK)
pyflakes >=0.5.0 : 1.5.0 (OK)
pygments >=2.0 : 2.1.3 (OK)
pylint >=0.25 : 1.6.4 (OK)
qtconsole >=4.2.0: 4.2.1 (OK)
rope >=0.9.4 : 0.9.4 (OK)
sphinx >=0.6.6 : 1.5.1 (OK)
sympy >=0.7.3 : 1.0 (OK)

[ccordoba12]

It seems the console is failing with an error message that contains characters that are not Unicode symbols.

Unicode is the standard for international characters, but I don't know how's that handled on non-English versions of Windows.

I'm very sorry, but I really don't know how to help you for now.

[waranzkomodom]

Hi, thx very much for your response. My teacher managed to figure out how to overcome problem with encoding and make spyder show the actual error.
It was enough to subsitute "utf-8" with "cp437" in this line "stderr = codecs.open(self.stderr_file, 'r', encoding='utf-8').read()".
I'm using windows in polish.

Cheers!

[ccordoba12]

I was also thinking that was the problem. Thanks for letting us know about it :-)

[ccordoba12]

@dalthviz, this is the bug I talked you about.