Develop Reference

How to work with .ipynb files without launching the Jupyter Notebook server?

I'm starting to work more with Jupyter notebooks, and am really starting to like it. However, I find it difficult to use it with my particular setup.
I have a workstation for running all the notebooks, but for a large part of my day I'm on-the-go with a space-constrained laptop with no power outlets. I'd like to be able to edit (but not run) these notebooks without installing and running the full Jupyter server backend, which I imagine would suck up a lot of power.
My question is: Is it possible for me to edit (and not run) notebooks without running the Jupyter server?

You could use one of the following options
1. ipynb-py-convert
With this module you can do a conversion from .py to .ipynb and vice-versa:
ipynb-py-convert ~/name_of_notebook.ipynb ~/name_of_notebook.py
where according to the documentation the cells are left as they are. To get back a jupyter notebook
ipynb-py-convert ~/name_of_notebook.py ~/name_of_notebook.ipynb
2. Ipython
However, you could also do a conversion to .py when you want to work it with an editor like VS Code or Sublime Text after you have download your .ipynb file with ipython:
ipython nbconvert --to python name_of_your_notebook.ipynb

As I was asking this question, I had opened the notebook locally in Visual Studio Code, but the preview was just the raw text representation of the notebook, so I had assumed that it needed the backend to run.
However, I was about to press submit on the question when I checked back in on it, and the notebook showed up just fine. So one solution is to open it in VS Code and wait a little bit.

Import variable from python script to jupyter ipython notebook

I am newbie to python and searched for 2 days to get solution but could not get find any solution. Please help me.
I have two python(newkmeans.py,newbisecting.py) files and one ipython jupyter notebook. I am running newbiecting.py from ipython notebook by calling it as %newbisecting.py which in turn calls newkmeans.py file. Now newkmeans.py file generates few set of variables like for example list values list1. I want to access this list1[] in ipython jupyter notebook. How can I do this? Please help me out.
I have tried using from newkmeans import list1 in ipython juypter notebook but could not get any results.

Asking for overwrite while trying to run script in ipython

I am fairly new to programming in python. I installed anaconda and am running iPython (the Jupyter qtconsole) v.4.3.0 and python v.3.6 on a Mac. Currently, I am trying to import a module with functions located in my home directory.
I have looked at stackoverflow and python documentation and found that it could be done with:
%run "Users/myUser/python_functions.py"
or
import python_functions
However, when I try both of these approaches, I get prompted to overwrite the file that I am running or importing:
File `python_functions.py` exists. Overwrite (y/[N])?
This is changing the previous file and not getting the functions I want to be imported.
What may explain this, and what can I do to import my module?

this is wrong but leaving it up for shame
import on ubuntu (and I'm guessing many other unix-like OSs including Mac) is a utility that saves any visible window on an X server and outputs it as an image file. You can capture a single window, the entire screen, or any rectangular portion of the screen.
My guess if you are running the import command in your console, and it's about to take a screenshot and save it over an existing file - python_functions
Before you the use the python import command, start a python interpreter:
$ python
>>>import yourfile
edit: on re-reading your question, I'm not so sure about my guess anymore, but leaving it up until you tell me I'm wrong :)

Running Jupyter qtconsole as an interpreter is likely causing the problem in this scenario. Instead using a IDE or command line interpreter will resolve it .
Since anaconda was installed, trying it with the IDE Spyder executes the code just fine without the overwrite prompt. It works on others (e.g PyCharm, Rodeo, etc.) as well.

Spyder frozen when using dype karg

I am having a problem when using the Ipython interpreter of Spyder,
basically when I run the following lines,
import numpy as np
my_data=np.genfromtxt(path_to_my_file,delimiter="\t",skip_header=1,dtype='str')
The whole of Spyder gets frozen.
I does not happen when I run the line on Ipython using the console. I have been testing what is causing Spyder to freeze and it is the kwarg dtype='str'
If I add that **kwarg, it freezes, and everything works fine if I don't.
Any idea of how to solve it or why is this happening?

I have just closed the variable explorer and now it is working,
Thanks to https://github.com/spyder-ide/spyder/issues/3139#issuecomment-215064619

DataFrame.to_csv() not working in IPython notebook

After updating various packages (I'm running the Anaconda Python distribution) DataFrame.to_csv() will not work from within IPython Notebook. Everything else Pandas-related seems to work fine (reading data into datframes, manipulating them, etc.) but DataFrame.to_csv() will not generate an output file. A snippet of the code:
hives_output = hives_data.groupby(['user_id','replay']).apply(hives_processor).sort(['user_id','replay'])
hives_output.to_csv('hives_output.csv',index=False)
The first command runs fine, but no output file is produced by the second command. No error is produced whatsoever.
Weirder still, the code runs fine (i.e. it does generate an output file) within a regular Python or IPython interpreter, or when run from the command line, so the problem would seem to be specific to IPython Notebook.
I've tried downgrading various packages, but have yet to isolate the problem. Has anyone experienced this? Any ideas on what might be the cause? Some sort of incompatibility between IPython-Notebook and Pandas?