jupyter notebook 文件的调用（调用.py文件或.ipynb文件）

jupyter notebook 文件的调用（调用.py文件或.ipynb文件）

参考文献：
jupyter notebook的project管理——.ipynb中调用.py文件
在jupyter notebook中调用.ipynb文件

调用 .py文件

这两个文件在工程的同一个文件夹中

hello.py中的代码：

def hello():
    print('say hello')

call_helper.ipynb中的代码：

from hello import *
hello()

运行：

这两个文件不在同一个文件夹中

如果这两个文件夹在同一个工程目录下

hello.py文件位于utils文件夹中，内容和上述的相同。
只需要将call_helper.ipynb中改为from utils.hello import hello

from utils.hello import *
hello()

如果这两个文件夹不在同一个工程目录下

如call_helper.ipynb位于G:\PHD\jupyter，而hello.py位于G:\PHD\test\utils文件夹中。
则需要在call_helper.ipynb中使用sys将目录 G:\PHD\test\utils 添加。

import sys
sys.path.append(r'G:\PHD|test')
from utils.hello import *
hello()

调用.ipynb文件

两个文件在同一个文件夹中

添加jupyter notebook解析文件
首先，创建一个python文件，例如Ipynb_importer.py，代码如下：
注意是python文件，.py。

import io, os,sys,types
from IPython import get_ipython
from nbformat import read
from IPython.core.interactiveshell import InteractiveShell

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]

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
sys.meta_path.append(NotebookFinder())

hello.ipynb

def hello():
    print('say hello')

call_helper.ipynb

import Ipynb_importer
from hello import hello 
hello()

运行：

两个文件不在同一个文件夹中

如果这两个文件夹在同一个工程目录下：

如果将hello.ipynb移入到utils文件夹。


call_helper.ipynb：

import Ipynb_importer
from utils.hello import hello
hello()

如果将hello.ipynb和Ipynb_importer.py都移入到utils文件夹。
call_helper.ipynb：

import utils.Ipynb_importer
from utils.hello import hello
hello() 

如果这两个文件夹不在同一个工程目录下

call_helper.ipynb：

import sys
import Ipynb_importer

sys.path.append(r'E:\tpz\jupyter-notebook')
from utils.hello import *

hello()

如果hello.ipynb放在更远的地方

call_helper.ipynb：

import sys
import Ipynb_importer

sys.path.append(r'E:\tpz\object_detect')
from utils.hello import *

hello()