I am using Anaconda Navigator for Python 3 to create jupyter notebooks. I created a custom python 2.7 environment. When I ran an old notebook of mine written for python 2.7, I got the "print statement is missing parentheses" error, suggesting it is interpreting my code in python 3, not 2, as intended.
How do I get it to run python 2.7?
Related
I want to run the debugger, but I must use python version 3.6 because I need to run an external software that requires it.
I have followed these indications:
https://github.com/microsoft/vscode-jupyter/wiki/Setting-Up-Run-by-Line-and-Debugging-for-Notebooks
They say, I must have python 3.7 or grater. Is there any other way in which I can run the debugger with jupyter and python 3.6?
I'm trying to create graphs using plotly for the first time. Since I'm currently using Visual Studio Code for my coding (either python scripts or notebooks), I'm currently trying to use plotly in VSC.
I've installed everything from the plotly getting started page (conda installed plotly, notebook, ipywidgets and even jupyter) but I'm still getiing an error when importing.
The thing is, when I've tried importing plotly in a python file in VSC, it's running well. I've also tried running it in a Jupyter Notebook and it's also running.
import plotly.express as px
I'm pretty sure that I've installed everything in the correct environment and I'm using the same environment all throughout.
What do I need to run plotly in a notebook in VSC?
It seems like your python versions/pip versions are different (especially if you're using an env). In Visual studio Code, you can bring up a simple terminal directing to the directory of your project (or env). Just click Terminal > New terminal. This will bring up a terminal (like CMD or terminal) at the bottom of the screen.
From then you can check the version of Pip and python for either your system globally, or the version install in your env. As long as your env is activated, then it will check the versions for the env, not your system.
For macOS:
To show all python installations of your system:
which -a python
To get the version for python 3 (which is what you should be on):
python3 --version
To get the version for pip:
pip -v
For windows:
python3 --version
pip -v
If the versions are incorrect then you can either install the right version of pip in your env or change python paths. First option is recommended.
If you are using macOS. Entering the command which -a python will show a very old Python 2.X version. Do not tamper with this or it's path as it is needed by macOS to run.
I recently began using julia, and I would like to use in with IPython Notebook/Jupyter.
So, I installed julia using MacPorts, i.e. sudo port install julia. Following the installation instructions here: https://github.com/JuliaLang/IJulia.jl
After the prompt, I used "Pkg.add("IJulia") to install IJulia.
However, I cannot use Julia with IPython notebook. After opening the notebook with
ipython notebook --profile=julia
the kernel for the julia notebook dies instantly and cannot be restarted.
The error on the Terminal shows:
[I 19:03:19.410 NotebookApp] KernelRestarter: restarting kernel (1/5)
WARNING:root:kernel dc00ae3a-8fa6-4d01-a802-f7845a16a9ba restarted
ERROR: SHA256 not defined
in include at /opt/local/lib/julia/sys.dylib
in process_options at /opt/local/lib/julia/sys.dylib
in _start at /opt/local/lib/julia/sys.dylib
while loading /Users/NAME/.julia/v0.3/IJulia/src/kernel.jl, in expression starting on line 6
I suspect I have installed IJulia incorrectly? How can I solve this?
(The version of julia is julia version 0.3.11. The version of python is Python 2.7.10. The version of ipython is 4.0.0.)
The current stable version of Julia is v0.4.0.
You should download it directly from the Julia homepage (.dmg):
http://julialang.org/downloads/
Having done that, run it and do Pkg.add("IJulia") again.
Then from within Julia do
using IJulia
notebook()
Note that the Jupyter Notebook (the new name for what used to be the IPython Notebook) is run as
jupyter notebook
The --profile julia is no longer necessary and should be removed.
Furthermore, this (jupyter notebook) will only work if you had a previous installation of Jupyter, which seems to be the case. In this case, I suggest you upgrade it with conda, if you installed Anaconda, or with pip.)
I finally was able to install ipython on my Windows 7 PC and it runs without any errors. The problem is that I used to code in ipython but in MAC. Now that I am trying to upload my previous notebooks I receive the following error:
Unreadable Notebook: MyFile.ipynb Unsupported nbformat version 4
I found this answer for my question but unfortunately that is not for windows and did not resolve my problem. It is worth to mention:
ipython --version
produces:
2.3.1
Any help or comment on this is much appreciated.
Thanks
It took me a while to figure this out but I got the first lead from user "cel". I used to have multiple versions of python (2.7 and 3.4). I removed python 3.4 because it's not compatible with spark yet. Next, I had to remove WinPython3.4 and replace it with WinPython2.7 so it can integrate with python 2.7 installed on my PC. Finally, I installed python 2.7.9 and set the C:/Python27/Script as a part of system environment variable. After doing all this I ran the following commands:
pip uninstall ipython
This helped me to remove older version of ipython. Then:
pip install ipython
This installed the latest version of ipython on my windows pc. Finally:
pip install notebook --upgrade
To upgrade notebook to latest version. Right now, ipython os installed and and should work fine doing this:
ipython notebook
Had no problem importing my previous .ipynb after all of the above.
Good luck to you all.
I have the same problem on Linux. Simply doing:
sudo pip install notebook --upgrade
worked for me. I have python 3.4 and 2.7 and unlike the answer by nimafl, there was no need for me to remove one them or to first uninstall ipython. A simple upgrade did the trick. Now instead of version 2.3.1 I have version 4.0.3 of ipython.
I am using Enthought/Canopy (version 1.1.0.1371) and would like to use nbconvert to convert ipython notebooks to other formats. nbconvert has now been incorporated into ipython and is not available outside of ipython. However, it is apparently not available within the Canopy distribution. Any suggestions?
I believe it is available in the current version of canopy.
You can always install canopy package the old fashioned way with setup.py, just make sure you call Canopy's python. That way, you don't have to always wait for the package manager to incorporate changes to repos.
If canopy's python is your system python, merely python setup.py install should work. If you have multiple python paths, find Canopy's python; on my Ubuntu system it's:
~/Enthought/Canopy_64bit/User/bin/python
So I would just do:
~/Enthought/Canopy_64bit/User/bin/python setup.py install
1) Use the Canopy Package manager to update IPython to version 1.0
2) Open a Canopy User Python shell / terminal / command prompt. If you did not make Canopy your default Python, be sure to see this article: https://support.enthought.com/entries/23646538-Make-Canopy-User-Python-be-your-default-Python
3) ipython nbconvert ....
4) http://knowyourmeme.com/memes/profit