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# few functions that make it possible to
import
functions
# from jupyter notebooks as from modules;
# source: http:
//jupyter-notebook.readthedocs.io/en/latest/examples/Notebook/Importing%20Notebooks.html
import
io, os, sys, types
from IPython
import
get_ipython
from nbformat
import
read
from IPython.core.interactiveshell
import
InteractiveShell
def find_notebook(fullname, path=None):
""
"find a notebook, given its fully qualified name and an optional path
This turns
"foo.bar"
into
"foo/bar.ipynb"
and tries turning
"Foo_Bar"
into
"Foo Bar"
if
Foo_Bar
does not exist.
""
"
name = fullname.rsplit(
'.'
,
1
)[-
1
]
if
not path:
path = [
''
]
for
d in path:
nb_path = os.path.join(d, name +
".ipynb"
)
if
os.path.isfile(nb_path):
return
nb_path
# let
import
Notebook_Name find
"Notebook Name.ipynb"
nb_path = nb_path.replace(
"_"
,
" "
)
if
os.path.isfile(nb_path):
return
nb_path
class
NotebookLoader(object):
""
"Module Loader for Jupyter Notebooks"
""
def __init__(self, path=None):
self.shell = InteractiveShell.instance()
self.path = path
def load_module(self, fullname):
""
"import a notebook as a module"
""
path = find_notebook(fullname, self.path)
#print (
"importing Jupyter notebook from %s"
% path)
# load the notebook object
with io.open(path,
'r'
, encoding=
'utf-8'
) as f:
nb = read(f,
4
)
# create the module and add it to sys.modules
#
if
name in sys.modules:
#
return
sys.modules[name]
mod = types.ModuleType(fullname)
mod.__file__ = path
mod.__loader__ = self
mod.__dict__[
'get_ipython'
] = get_ipython
sys.modules[fullname] = mod
# extra work to ensure that magics that would affect the user_ns
# actually affect the notebook module's ns
save_user_ns = self.shell.user_ns
self.shell.user_ns = mod.__dict__
try
:
for
cell in nb.cells:
if
cell.cell_type ==
'code'
:
# transform the input to executable Python
code = self.shell.input_transformer_manager.transform_cell(cell.source)
# run the code in themodule
exec(code, mod.__dict__)
finally
:
self.shell.user_ns = save_user_ns
return
mod
class
NotebookFinder(object):
""
"Module finder that locates Jupyter Notebooks"
""
def __init__(self):
self.loaders = {}
def find_module(self, fullname, path=None):
nb_path = find_notebook(fullname, path)
if
not nb_path:
return
key = path
if
path:
# lists aren't hashable
key = os.path.sep.join(path)
if
key not in self.loaders:
self.loaders[key] = NotebookLoader(path)
return
self.loaders[key]
sys.meta_path.append(NotebookFinder())
|
本文转自疯吻IT博客园博客，原文链接：http://www.cnblogs.com/fengwenit/p/6422381.html，如需转载请自行联系原作者
