Tracer (xonsh.tracer)

Implements a xonsh tracer.

class xonsh.tracer.TracerAlias(threadable=True, **kwargs)

Tool for tracing xonsh code as it runs.

build()

Sub-classes should return constructed ArgumentParser

create_parser(func=None, has_args=False, allowed_params=None, **kwargs)

create root parser

property parser

class xonsh.tracer.TracerType(*args, **kwargs)

Represents a xonsh tracer object, which keeps track of all tracing state. This is a singleton.

color_output(usecolor)

Specify whether or not the tracer output should be colored.

off_files(_args, files: Iterable[str] = ('__file__'))

removes selected files fom tracing.

Parameters

files

file paths to stop watching, use __file__ (default) to select the current file.

on_files(_args, files: Iterable[str] = ('__file__'))

begins tracing selected files.

Parameters

_args

argv from alias parser

files

file paths to watch, use “__file__” (default) to select the current file.

start(filename)

Starts tracing a file.

stop(filename)

Stops tracing a file.

toggle_color(toggle: bool = False)

output color management for tracer

Parameters

toggle

true/false, y/n, etc. to toggle color usage.

trace(frame, event, arg)

Implements a line tracing function.

valid_events = frozenset({'call', 'line'})

xonsh.tracer.tracer_format_line(fname, lineno, line, color=True, lexer=None, formatter=None)

Formats a trace line suitable for printing.