IPython console in spyder extremely slow in Anaconda

Question

I\'m trying Anaconda/Spyder after using the standard python installation/IDLE for several years. The console (and variable explorer) becomes progressively slower during each

Answer 1

@JJR4's answer didn't work for me (seems to work for others). Another workaround is to type %connect_info magic command into the IPython Spyder console which will display the JSON info to connect another console to the kernel.

The output of the magic command explains how to connect, but basically there are three options.

Paste the above JSON into a file, and connect with:

$> jupyter  --existing 

or, if you are local, you can connect with just:

$> jupyter  --existing .json

or even just:

$> jupyter  --existing

if this is the most recent Jupyter kernel you have started.

I typically use qtconsole as the app. Once you enter your chosen connection method into the command line, a new console will open that is connected to the same kernel as the console in Spyder. For some reason, the new console does not lag even if the Spyder console does.

Enter everything in the new console, even runfile()

Hope this helps!

UPDATE: Downgrading to ipykernel version 4.10 seems to solve the issue for me. Thanks to Carlos Cordoba - see GitHub conversation in link below.