Make traceback easier to see for xonsh.

Python work very often with large libraries like pandas, or matplotlib. This means that exceptions often produce long stack traces. Since we don't need to see the library detail in the vast majority of cases. Especially with a shell like xonsh.

This xontrib making readable and short traceback.

example: Simple division by zero error.

example: This simple pandas error produces a stacktrace containing 28 lines. But xontrib load...

Install

Install using pip

pip install xontrib-readable-traceback

Write .xonshrc

xontrib load readable-traceback

Usage

This xontrib use backtrace package.

For the main usage, please refer to the following.

https://github.com/nir0s/backtrace#usage

Example xonshrc

xonshrc sample.

~~~
xontrib load readable-traceback
$READABLE_TRACE_STRIP_PATH_ENV=True
$READABLE_TRACE_REVERSE=True
~~~

Setting backtrace

The correspondence with the variable of backtrace is as follows.

backtrace	xontrib-readable-traceback	Type
reverse	$READABLE_TRACE_REVERSE	bool
align	$READABLE_TRACE_ALIGN	bool
strip_path	$READABLE_TRACE_STRIP_PATH_ENV	bool
enable_on_envvar_only	$READABLE_TRACE_ENVVAR_ONLY	bool
on_tty	$READABLE_TRACE_ON_TTY	bool
conservative	$READABLE_TRACE_CONSERVATIVE	bool
style	$READABLE_TRACE_STYLES	dict

For details of style please refer to backtrace#style and colorama.

Switching readable-traceback

If we want to turn trace off, we can use:

$XONSH_READABLE_TRACEBACK=False

If so, the notation of traceback follows xonsh_env($XONSH_SHOW_TRACEBACK).

Xonsh traceback log

Xonsh can keep a log of traceback.
To keep the log, write "ABSOLUTE PATH TO TRACEBACK LOG" below.

$XONSH_TRACEBACK_LOGFILE="PATH"

If it is None, no log is kept. Default is None.

Thanks

Thanks

• https://github.com/xonsh/xonsh
• https://github.com/nir0s/backtrace
• https://github.com/laerus/cookiecutter-xontrib

I appreciate all Python's assets and xonsh.
If there is something problem, up to github issue.
@vaaaaanquish