Setup: MacOS High Sierra, Spyder 3.3.1, Python 2.7.15 64bits, Qt 5.9.4, PyQt5 5.9.2 on Darwin
I run the following code in the IPython console within Spyder:
In [1]: import os
In [2]: os.system("ls")
Out[2]: 0
In [3]: os.system("aasdasd")
Out[3]: 32512
I can see the output to stdout of the ls command in the bash shell where I run spyder, but not to stderr of the second os.system call that should print sh: asdasd: command not found.
Where does spyder redirect stderr to? Is there a way to see error messages like the one generated in the second case?
Thank you very much!
(Spyder maintainer here) This was fixed in spyder-kernels 0.3.0, the package that provides kernels for our consoles. And by fixed I mean that both stdout and stderr of external commands are now shown directly in our IPython consoles.
To update spyder-kernels, please close Spyder and run in a system terminal (xterm or Terminal.app, this doesn't work on Windows):
conda install spyder-kernels=0.*
if you use Anaconda (it's not available at the moment, but it should be shortly, please wait until it is), or
pip install spyder-kernels==0.*
if you use a custom Python installation.