|
|
"""Simple function for embedding an IPython kernel
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
import sys
|
|
|
|
|
|
from IPython.utils.frame import extract_module_locals
|
|
|
|
|
|
from kernelapp import IPKernelApp
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Code
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def embed_kernel(module=None, local_ns=None, **kwargs):
|
|
|
"""Embed and start an IPython kernel in a given scope.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
module : ModuleType, optional
|
|
|
The module to load into IPython globals (default: caller)
|
|
|
local_ns : dict, optional
|
|
|
The namespace to load into IPython user namespace (default: caller)
|
|
|
|
|
|
kwargs : various, optional
|
|
|
Further keyword args are relayed to the KernelApp constructor,
|
|
|
allowing configuration of the Kernel. Will only have an effect
|
|
|
on the first embed_kernel call for a given process.
|
|
|
|
|
|
"""
|
|
|
# get the app if it exists, or set it up if it doesn't
|
|
|
if IPKernelApp.initialized():
|
|
|
app = IPKernelApp.instance()
|
|
|
else:
|
|
|
app = IPKernelApp.instance(**kwargs)
|
|
|
app.initialize([])
|
|
|
# Undo unnecessary sys module mangling from init_sys_modules.
|
|
|
# This would not be necessary if we could prevent it
|
|
|
# in the first place by using a different InteractiveShell
|
|
|
# subclass, as in the regular embed case.
|
|
|
main = app.kernel.shell._orig_sys_modules_main_mod
|
|
|
if main is not None:
|
|
|
sys.modules[app.kernel.shell._orig_sys_modules_main_name] = main
|
|
|
|
|
|
# load the calling scope if not given
|
|
|
(caller_module, caller_locals) = extract_module_locals(1)
|
|
|
if module is None:
|
|
|
module = caller_module
|
|
|
if local_ns is None:
|
|
|
local_ns = caller_locals
|
|
|
|
|
|
app.kernel.user_module = module
|
|
|
app.kernel.user_ns = local_ns
|
|
|
app.shell.set_completer_frame()
|
|
|
app.start()
|
|
|
|
