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Added a warning message, if you use MATPLOTLIB you will have to deactivate threading or the window will not be shown.
Added a warning message, if you use MATPLOTLIB you will have to deactivate threading or the window will not be shown.

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magic.py
147 lines | 4.3 KiB | text/x-python | PythonLexer
# encoding: utf-8
__docformat__ = "restructuredtext en"
#-------------------------------------------------------------------------------
# Copyright (C) 2008 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
import os
import __builtin__
# Local imports.
from util import Bunch
# fixme: RTK thinks magics should be implemented as separate classes rather than
# methods on a single class. This would give us the ability to plug new magics
# in and configure them separately.
class Magic(object):
""" An object that maintains magic functions.
"""
def __init__(self, interpreter, config=None):
# A reference to the interpreter.
self.interpreter = interpreter
# A reference to the configuration object.
if config is None:
# fixme: we need a better place to store this information.
config = Bunch(ESC_MAGIC='%')
self.config = config
def has_magic(self, name):
""" Return True if this object provides a given magic.
Parameters
----------
name : str
"""
return hasattr(self, 'magic_' + name)
def object_find(self, name):
""" Find an object in the available namespaces.
fixme: this should probably be moved elsewhere. The interpreter?
"""
name = name.strip()
# Namespaces to search.
# fixme: implement internal and alias namespaces.
user_ns = self.interpreter.user_ns
internal_ns = {}
builtin_ns = __builtin__.__dict__
alias_ns = {}
# Order the namespaces.
namespaces = [
('Interactive', user_ns),
('IPython internal', internal_ns),
('Python builtin', builtin_ns),
('Alias', alias_ns),
]
# Initialize all results.
found = False
obj = None
space = None
ds = None
ismagic = False
isalias = False
# Look for the given name by splitting it in parts. If the head is
# found, then we look for all the remaining parts as members, and only
# declare success if we can find them all.
parts = name.split('.')
head, rest = parts[0], parts[1:]
for nsname, ns in namespaces:
try:
obj = ns[head]
except KeyError:
continue
else:
for part in rest:
try:
obj = getattr(obj, part)
except:
# Blanket except b/c some badly implemented objects
# allow __getattr__ to raise exceptions other than
# AttributeError, which then crashes us.
break
else:
# If we finish the for loop (no break), we got all members
found = True
space = nsname
isalias = (ns == alias_ns)
break # namespace loop
# Try to see if it is a magic.
if not found:
if name.startswith(self.config.ESC_MAGIC):
name = name[1:]
obj = getattr(self, 'magic_' + name, None)
if obj is not None:
found = True
space = 'IPython internal'
ismagic = True
# Last try: special-case some literals like '', [], {}, etc:
if not found and head in ["''", '""', '[]', '{}', '()']:
obj = eval(head)
found = True
space = 'Interactive'
return dict(
found=found,
obj=obj,
namespace=space,
ismagic=ismagic,
isalias=isalias,
)
def magic_pwd(self, parameter_s=''):
""" Return the current working directory path.
"""
return os.getcwd()
def magic_env(self, parameter_s=''):
""" List environment variables.
"""
return os.environ.data