正常來說在jupyter notebook 中只能呼叫.py檔案，要想要呼叫jupyter notebook自己的檔案會報錯。

Jupyter Notebook官網介紹了一種簡單的方法：

http://jupyter-notebook.readthedocs.io/en/latest/examples/Notebook/Importing%20Notebooks.html

新增jupyter notebook解析檔案

首先，建立一個python檔案，例如Ipynb_importer.py，程式碼如下：

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())

呼叫jupyter notebook module

只要在我們的工作目錄下放置Ipynb_importer.py檔案，就可以正常呼叫所有的jupyter notebook檔案。 這種方法的本質就是使用一個jupyter notenook解析器先對.ipynb檔案進行解析，把檔案內的各個模組載入到記憶體裡供其他python檔案呼叫。

新建一個檔案foo.ipynb

def foo():
 print("foo")

再新建一個ipynb檔案，呼叫foo這個檔案

import Ipynb_importer
import foo
foo.foo() 

執行結果如下：

importing Jupyter notebook from foo.ipynb

foo

補充知識：jupyter notebook_主函式檔案如何呼叫類檔案

使用jupyter notebook編寫python程式，rw_visual.jpynb是寫的主函式，random_walk.jpynb是類（如圖）。在主函式中將類例項化後執行會報錯，經網路查詢解決了問題，缺少Ipynb_importer.py這樣一個連結檔案。

解決方法：

1、在同一路徑下建立名為Ipynb_importer.py的檔案：File-->download as-->Python(.py)，該檔案內容如下：

#!/usr/bin/env python
# coding: utf-8
# In[ ]:
 
import io,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,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,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('.'," ")
  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,self.path)
 
  print ("importing Jupyter notebook from %s" % path)
 
  # load the notebook object
  with io.open(path,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())

2、在主函式中import Ipynb_importer

import matplotlib.pyplot as plt
import Ipynb_importer
 
from random_walk import RandomWalk
 
rw = RandomWalk()
rw.fill_walk()
plt.scatter(rw.x_values,rw.y_values,s=15)
plt.show()

3、執行主函式，呼叫成功

ps:random_walk.jpynb檔案內容如下：

from random import choice
 
class RandomWalk():
 def __init__(self,num_points=5000):
  self.num_points = num_points
  self.x_values = [0]
  self.y_values = [0]
  
 def fill_walk(self):
  while len(self.x_values) < self.num_points:
   x_direction = choice([1,-1])
   x_distance = choice([0,1,2,3,4])
   x_step = x_direction * x_distance
   
   y_direction = choice([1,-1])
   y_distance = choice([0,4])
   y_step = y_direction * y_distance
   
   if x_step == 0 and y_step == 0:
    continue
    
   next_x = self.x_values[-1] + x_step
   next_y = self.y_values[-1] + y_step
   
   self.x_values.append(next_x)
   self.y_values.append(next_y)

執行結果：

以上這篇在jupyter notebook中呼叫.ipynb檔案方式就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。