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I am really new using miniconda. I created an environment in which I installed Jupyter, but when I tried to execute the command "jupyter notebook" I got the following message: enter image description here

I don't know where the error is (I even uninstall tornado and installed its 4.5.3 version as other post suggested)... I will be grateful if you could help me with this

Thanks in advance

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  • Hmm, looks like some strange dependency did not get installed correctly. You could try conda update --all and then try to load jupyter notebook again. Or you can try creating a new environment with conda create -n myenv python=3.8 jupyter ipython . Sometimes jupyter does not install ipython, so that can cause issues too. Commented Sep 16, 2020 at 0:03
  • It looks like parso did not properly specify a dependency on Python. This syntax for giving types of variables is only available in Python 3.6 and later (if I recall correctly). Is there a reason you need to use Python 3.5? The current version is 3.8 and 3.9 will be released soon... Commented Sep 16, 2020 at 13:46
  • Thanks!! I solved the problem by unsinstalling parso Commented Sep 21, 2020 at 20:47

1 Answer 1

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It's not downloaded by default with Miniconda. For first time use, just open the anaconda prompt and type:

> pip install jupyter

then open the notebook directly

> jupyter notebook

that's it.

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I've seen others, such as here say that they needed python -m notebook to launch the notebook, see here.

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