使用nbconvert 6.07和jupyter client 6.1.12:

转换jupyter笔记本到python脚本

$ jupyter nbconvert mynotebook.ipynb --to python

转换jupyter笔记本到python脚本指定输出文件名

$ jupyter nbconvert mynotebook.ipnb --to python --output myscript.py

没有文件/目录错误

在我的mint [ubuntu]系统上，尽管已经安装了jupyter，笔记本电脑也可以工作，但jupyter nbconvert——to脚本给出了错误，没有文件/目录，直到我做了一个单独的

sudo apt-get install jupyter-nbconvert

然后一切都很顺利。我只是想添加这个，以防有人碰到同样的错误(对我来说，这是令人困惑的，因为我认为没有文件错误指向笔记本，它肯定在本地目录中，我花了一段时间才意识到子命令没有安装)。

给出的解决方案仅适用于转换单个.py文件。下面是一个转换目录及其子目录中的所有.py文件的解决方案。

首先，您需要安装一次只转换一个文件的工具，如ipynb-py-convert

PIP安装ipynb-py-convert

然后cd到你的文件夹。py文件和目录的位置。然后我们在目录和子目录中的所有文件上递归地运行这个工具:

powershell:

foreach ($f在Get-ChildItem "."过滤器*。ipynb-py-convert $f。FullName " $(美元f.FullName.Substring (0, f.FullName.Length-6美元)). py”}

现在，如果你想用批处理转换从。ipynb转换到。py，你可以运行:

foreach ($f在Get-ChildItem "."-Filter *.py -递归){ipynb-py-convert $f。FullName " $(美元f.FullName.Substring (0, f.FullName.Length-3)美元).ipynb "}

这在我探索.py文件时给了我很大帮助。我做了一个项目的副本，运行这段代码，并快速在Jupiter测试代码的不同部分作为单元格等等。我希望它能帮助更多的人。

下面是一种不使用ipython就可以从V3或V4 ipynb中提取代码的快速而简单的方法。它不检查单元格类型等。

import sys,json

f = open(sys.argv[1], 'r') #input.ipynb
j = json.load(f)
of = open(sys.argv[2], 'w') #output.py
if j["nbformat"] >=4:
        for i,cell in enumerate(j["cells"]):
                of.write("#cell "+str(i)+"\n")
                for line in cell["source"]:
                        of.write(line)
                of.write('\n\n')
else:
        for i,cell in enumerate(j["worksheets"][0]["cells"]):
                of.write("#cell "+str(i)+"\n")
                for line in cell["input"]:
                        of.write(line)
                of.write('\n\n')

of.close()

我已经构建了一个函数来实现这一点。用户不需要安装任何东西就可以使用它。

#!/usr/bin/python


# A short routine to convert a Jupyter Notebook to a Python file

import json

def ipynb_to_py(input_ipynb_file,output_py_file=None):
    """
    Generate a Python script (.py) that includes all source code from the input Jupyter notebook (.ipynb).
    
    The user can input a Jupyter Notebook file from the current working directory or from a path.
    
    If the name for output Python file is not specified, 
    the output file name will copy the file name of the input Jupyter Notebook, 
    but the file exention will be changed from ".ipynb" chanegd to ".py".
    And the output Python file will be saved at the same directory of the input Jupyter Notebook.
    For example:
    ipynb_to_py("test-jupyternotebook.ipynb")
    ipynb_to_py("./test-input-dir/test-jupyternotebook.ipynb")
    
    The user can also specify an output file name that ends with ".py".
    If the output file name is provided, but no path to output file is added, 
    the file will be saved at the current working directory.
    For example:
    ipynb_to_py("test-jupyternotebook.ipynb","test1.py")
    ipynb_to_py("./test-input-dir/test-jupyternotebook.ipynb","test2.py")
        
    The user can save out the file at a target directory by adding a path to the output file.
    For example: 
    ipynb_to_py("test-jupyternotebook.ipynb","./test-outputdir/test3.py")
    ipynb_to_py("./test-input-dir/test-jupyternotebook.ipynb","./test-output-dir/test4.py")
    
    This function does not edit or delete the original input Jupyter Notebook file.
    
    Args:
    -----
        input_ipynb_file: The file name string for the Jupyter Notebook (ends with ".ipynb")
        output_py_file (optional): The file name for Python file to be created (ends with ".py"). 
    
    Returns:
    --------
        A Python file containing all source code in the Jupyter Notebook.
        
    Example usages:
    ---------------
        ipynb_to_py("test-jupyternotebook.ipynb")
        ipynb_to_py("./test-input-dir/test-jupyternotebook.ipynb")
        ipynb_to_py("test-jupyternotebook.ipynb","test1.py")
        ipynb_to_py("test-jupyternotebook.ipynb","./test-outputdir/test2.py")
        ipynb_to_py("test-jupyternotebook.ipynb","./test-outputdir/test3.py")
        ipynb_to_py("./test-input-dir/test-jupyternotebook.ipynb","./test-output-dir/test4.py")
             
    """
    # Check if the input file is a Jupyter Notebook
    if input_ipynb_file.endswith(".ipynb"):
        
        # Open the input Jupyter Notebook file
        notebook = open(input_ipynb_file)
        
        # Read its content in the json format
        notebook_content = json.load(notebook)

        # Only extract the source code snippet from each cell in the input Jupyter Notebook
        source_code_snippets = [cell['source'] for cell in notebook_content['cells']]
        
        # If the name for output Python file is not specified,
        # The name of input Jupyter Notebook will be used after changing ".ipynb" to ".py".
        if output_py_file == None:
            output_py_file = input_ipynb_file.split('.ipynb')[0]+".py"
        else:
            pass

        # Create a Python script to save out all the extracted source code snippets
        output_file = open(output_py_file,'w')

        # Print out each line in each source code snippet to the output file
        for snippet in source_code_snippets:
            for line in snippet:
                # Use end='' to avoid creating unwanted gaps between lines
                print(line,end = '',file = output_file)
            # At end of each snippet, move to the next line before printing the next one
            print('',sep = '\n',file=output_file)

        # Close the output file
        output_file.close()
        print("The path to output file:",output_py_file)
        
    else:
        print("The input file must be a Jupyter Notebook (in .ipynb format)!")
        
def main():
    pass

if __name__ == "__main__":
    main()

有一个非常好的包叫做nb_dev，它是为在Jupyter notebook中编写Python包而设计的。与nbconvert一样，它可以将笔记本转换为.py文件，但它更灵活、更强大，因为它有许多不错的额外创作功能，可以帮助您在PyPI上开发测试、文档和注册包。它是快速发展起来的。人工智能的人。

它有一点学习曲线，但文档很好，总体上不难。