|
|
"""Implementation of configuration-related magic functions.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2012 The IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# Stdlib
|
|
|
import re
|
|
|
|
|
|
# Our own packages
|
|
|
from IPython.core.error import UsageError
|
|
|
from IPython.core.magic import Magics, magics_class, line_magic
|
|
|
from logging import error
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Magic implementation classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
reg = re.compile(r'^\w+\.\w+$')
|
|
|
@magics_class
|
|
|
class ConfigMagics(Magics):
|
|
|
|
|
|
def __init__(self, shell):
|
|
|
super(ConfigMagics, self).__init__(shell)
|
|
|
self.configurables = []
|
|
|
|
|
|
@line_magic
|
|
|
def config(self, s):
|
|
|
"""configure IPython
|
|
|
|
|
|
%config Class[.trait=value]
|
|
|
|
|
|
This magic exposes most of the IPython config system. Any
|
|
|
Configurable class should be able to be configured with the simple
|
|
|
line::
|
|
|
|
|
|
%config Class.trait=value
|
|
|
|
|
|
Where `value` will be resolved in the user's namespace, if it is an
|
|
|
expression or variable name.
|
|
|
|
|
|
Examples
|
|
|
--------
|
|
|
|
|
|
To see what classes are available for config, pass no arguments::
|
|
|
|
|
|
In [1]: %config
|
|
|
Available objects for config:
|
|
|
AliasManager
|
|
|
DisplayFormatter
|
|
|
HistoryManager
|
|
|
IPCompleter
|
|
|
LoggingMagics
|
|
|
MagicsManager
|
|
|
OSMagics
|
|
|
PrefilterManager
|
|
|
ScriptMagics
|
|
|
TerminalInteractiveShell
|
|
|
|
|
|
To view what is configurable on a given class, just pass the class
|
|
|
name::
|
|
|
|
|
|
In [2]: %config IPCompleter
|
|
|
IPCompleter(Completer) options
|
|
|
----------------------------
|
|
|
IPCompleter.backslash_combining_completions=<Bool>
|
|
|
Enable unicode completions, e.g. \\alpha<tab> . Includes completion of latex
|
|
|
commands, unicode names, and expanding unicode characters back to latex
|
|
|
commands.
|
|
|
Current: True
|
|
|
IPCompleter.debug=<Bool>
|
|
|
Enable debug for the Completer. Mostly print extra information for
|
|
|
experimental jedi integration.
|
|
|
Current: False
|
|
|
IPCompleter.greedy=<Bool>
|
|
|
Activate greedy completion
|
|
|
PENDING DEPRECTION. this is now mostly taken care of with Jedi.
|
|
|
This will enable completion on elements of lists, results of function calls, etc.,
|
|
|
but can be unsafe because the code is actually evaluated on TAB.
|
|
|
Current: False
|
|
|
IPCompleter.jedi_compute_type_timeout=<Int>
|
|
|
Experimental: restrict time (in milliseconds) during which Jedi can compute types.
|
|
|
Set to 0 to stop computing types. Non-zero value lower than 100ms may hurt
|
|
|
performance by preventing jedi to build its cache.
|
|
|
Current: 400
|
|
|
IPCompleter.limit_to__all__=<Bool>
|
|
|
DEPRECATED as of version 5.0.
|
|
|
Instruct the completer to use __all__ for the completion
|
|
|
Specifically, when completing on ``object.<tab>``.
|
|
|
When True: only those names in obj.__all__ will be included.
|
|
|
When False [default]: the __all__ attribute is ignored
|
|
|
Current: False
|
|
|
IPCompleter.merge_completions=<Bool>
|
|
|
Whether to merge completion results into a single list
|
|
|
If False, only the completion results from the first non-empty
|
|
|
completer will be returned.
|
|
|
Current: True
|
|
|
IPCompleter.omit__names=<Enum>
|
|
|
Instruct the completer to omit private method names
|
|
|
Specifically, when completing on ``object.<tab>``.
|
|
|
When 2 [default]: all names that start with '_' will be excluded.
|
|
|
When 1: all 'magic' names (``__foo__``) will be excluded.
|
|
|
When 0: nothing will be excluded.
|
|
|
Choices: any of [0, 1, 2]
|
|
|
Current: 2
|
|
|
IPCompleter.profile_completions=<Bool>
|
|
|
If True, emit profiling data for completion subsystem using cProfile.
|
|
|
Current: False
|
|
|
IPCompleter.profiler_output_dir=<Unicode>
|
|
|
Template for path at which to output profile data for completions.
|
|
|
Current: '.completion_profiles'
|
|
|
IPCompleter.use_jedi=<Bool>
|
|
|
Experimental: Use Jedi to generate autocompletions. Default to True if jedi
|
|
|
is installed.
|
|
|
Current: True
|
|
|
|
|
|
but the real use is in setting values::
|
|
|
|
|
|
In [3]: %config IPCompleter.greedy = True
|
|
|
|
|
|
and these values are read from the user_ns if they are variables::
|
|
|
|
|
|
In [4]: feeling_greedy=False
|
|
|
|
|
|
In [5]: %config IPCompleter.greedy = feeling_greedy
|
|
|
|
|
|
"""
|
|
|
from traitlets.config.loader import Config
|
|
|
# some IPython objects are Configurable, but do not yet have
|
|
|
# any configurable traits. Exclude them from the effects of
|
|
|
# this magic, as their presence is just noise:
|
|
|
configurables = sorted(set([ c for c in self.shell.configurables
|
|
|
if c.__class__.class_traits(config=True)
|
|
|
]), key=lambda x: x.__class__.__name__)
|
|
|
classnames = [ c.__class__.__name__ for c in configurables ]
|
|
|
|
|
|
line = s.strip()
|
|
|
if not line:
|
|
|
# print available configurable names
|
|
|
print("Available objects for config:")
|
|
|
for name in classnames:
|
|
|
print(" ", name)
|
|
|
return
|
|
|
elif line in classnames:
|
|
|
# `%config TerminalInteractiveShell` will print trait info for
|
|
|
# TerminalInteractiveShell
|
|
|
c = configurables[classnames.index(line)]
|
|
|
cls = c.__class__
|
|
|
help = cls.class_get_help(c)
|
|
|
# strip leading '--' from cl-args:
|
|
|
help = re.sub(re.compile(r'^--', re.MULTILINE), '', help)
|
|
|
print(help)
|
|
|
return
|
|
|
elif reg.match(line):
|
|
|
cls, attr = line.split('.')
|
|
|
return getattr(configurables[classnames.index(cls)],attr)
|
|
|
elif '=' not in line:
|
|
|
msg = "Invalid config statement: %r, "\
|
|
|
"should be `Class.trait = value`."
|
|
|
|
|
|
ll = line.lower()
|
|
|
for classname in classnames:
|
|
|
if ll == classname.lower():
|
|
|
msg = msg + '\nDid you mean %s (note the case)?' % classname
|
|
|
break
|
|
|
|
|
|
raise UsageError( msg % line)
|
|
|
|
|
|
# otherwise, assume we are setting configurables.
|
|
|
# leave quotes on args when splitting, because we want
|
|
|
# unquoted args to eval in user_ns
|
|
|
cfg = Config()
|
|
|
exec("cfg."+line, self.shell.user_ns, locals())
|
|
|
|
|
|
for configurable in configurables:
|
|
|
try:
|
|
|
configurable.update_config(cfg)
|
|
|
except Exception as e:
|
|
|
error(e)
|
|
|
|
