spyder doesn't launch after installing pytorch
I installed pytorch but after that Spyder can no longer be launched. Here are the terminal info:


  conda install pytorch torchvision -c pytorch Solving environment: done
  
  ==> WARNING: A newer version of conda exists. &lt;==   current version: 4.5.10   latest version: 4.5.11
  
  Please update conda by running

$ conda update -n base -c defaults conda

  
  Package Plan
  
  environment location: /anaconda3/envs/base_py36
  
  added / updated specs: 
      - pytorch
      - torchvision
  
  The following packages will be downloaded:

package                    |            build
---------------------------|-----------------
torchvision-0.2.1          |           py36_1         123 KB  pytorch
scipy-1.1.0                |   py36hf1f7d93_0        15.4 MB
scikit-learn-0.20.0        |   py36h4f467ca_1         5.4 MB
numpy-base-1.15.2          |   py36h8a80b8c_1         4.1 MB
numpy-1.11.3               |   py36heee0a97_5         3.4 MB
ninja-1.8.2                |   py36h04f5b5a_1          93 KB
pytorch-0.4.1              |py36_cuda0.0_cudnn0.0_1        10.0 MB  pytorch
------------------------------------------------------------
                                       Total:        38.5 MB

  
  The following NEW packages will be INSTALLED:

ninja:        1.8.2-py36h04f5b5a_1                 
pytorch:      0.4.1-py36_cuda0.0_cudnn0.0_1 pytorch
torchvision:  0.2.1-py36_1                  pytorch

  
  The following packages will be REMOVED:

accelerate:   2.3.1-np111py36_0                    

  
  The following packages will be UPDATED:

mkl:          11.3.3-0                              --&gt; 2019.0-118           
numexpr:      2.6.7-py36hde7755b_0                  --&gt; 2.6.8-py36h1dc9127_0 
numpy:        1.11.3-py36_nomklh8ecaf62_5           --&gt; 1.11.3-py36heee0a97_5
numpy-base:   1.15.0-py36he97cb71_0                 --&gt; 1.15.2-py36h8a80b8c_1
scikit-learn: 0.19.1-py36_nomklhde7755b_0           --&gt; 0.20.0-py36h4f467ca_1
scipy:        1.1.0-py36_nomklh7cd7d8e_0            --&gt; 1.1.0-py36hf1f7d93_0 

  
  The following packages will be DOWNGRADED:

blas:         1.0-openblas                          --&gt; 1.0-mkl              

  
  Proceed ([y]/n)? y
  
  Downloading and Extracting Packages torchvision-0.2.1    | 123 KB    |
  
  ############################### | 100%  scipy-1.1.0          | 15.4 MB   | ##################################### | 100%  scikit-learn-0.20.0  | 5.4 MB    |
  
  ############################### | 100%  numpy-base-1.15.2    | 4.1 MB    | ##################################### | 100%  numpy-1.11.3         | 3.4 MB    | ##################################### | 100%
  
  ninja-1.8.2          | 93 KB     |
  
  ############################### | 100%  pytorch-0.4.1        | 10.0 MB   | ##################################### | 100%  Preparing transaction: done


I don't know if you have solved your issue, but in case you have and someone else comes across this question or you haven't and are still waiting:

I came across your post as a result of having the same thing happen to me... 

It would seem that all I had to do was "conda update all" for it to start working again!
