2

First, I already do

conda install python=3.6

and I know 

conda create --name py36 python=3.6
source activate py36

But, what I want to change is default python version of anaconda in

platform : osx-64

      conda version : 4.3.30
   conda is private : False
  conda-env version : 4.3.30
conda-build version : 3.0.19
     python version : 3.5.4.final.0
   requests version : 2.14.2
   root environment : /Users/moonkeelee/anaconda  (writable)
default environment : /Users/moonkeelee/anaconda
   envs directories : /Users/moonkeelee/anaconda/envs
                      /Users/moonkeelee/.conda/envs
      package cache : /Users/moonkeelee/anaconda/pkgs
                      /Users/moonkeelee/.conda/pkgs
       channel URLs : https://repo.continuum.io/pkgs/main/osx-64
                      https://repo.continuum.io/pkgs/main/noarch
                      https://repo.continuum.io/pkgs/free/osx-64
                      https://repo.continuum.io/pkgs/free/noarch
                      https://repo.continuum.io/pkgs/r/osx-64
                      https://repo.continuum.io/pkgs/r/noarch
                      https://repo.continuum.io/pkgs/pro/osx-64
                      https://repo.continuum.io/pkgs/pro/noarch
        config file : None
         netrc file : None
       offline mode : False
         user-agent : conda/4.3.30 requests/2.14.2 CPython/3.5.4 Darwin/16.7.0 OSX/10.12.6    
            UID:GID : 501:20

As I said, I alreay do

conda install python=3.6

but, it did not change the version of conda python version as you see above. If I redo install python 3.6 the following error occurred

UnsatisfiableError: The following specifications were found to be in conflict:

- argcomplete -> argparse -> python 2.6*

- python 3.6*

Use "conda info <package>" to see the dependencies for each package.

Now.. I don't know how to do it. The reason I want to change default version of python, not use conda's environment, I want to develop python with atom, and if I check the python version in atom with 

import sys

print(sys.version)

the version always 3.5 although I installed python 3.6.

please help

wallah
  • 1,964
  • 5
  • 27
  • 48

2 Answers2

2

Try to uninstall the offending package first. Sometimes there can be conflicts with older version packages ( or even those packages might not be supported in the newest python version, yet - this should not be case of arcomplete ).

conda uninstall arcomplete

  • this is an alias for conda remove argcomplete conda-manager

and then run again

conda install python=3.6

If another conflicts pop up, I suggest removing conda from path and reinstalling it completely, it might be in a broken or conflict state from previous usage (e.g --force removal)

CermakM
  • 1,642
  • 1
  • 16
  • 15
  • Yes... I did with your suggestion but not work. so I uninstall anaconda and install it. And it change (finally) the version of python with 3.6. I referenced https://stackoverflow.com/questions/22585235/python-anaconda-how-to-safely-uninstall and https://docs.anaconda.com/anaconda/install/uninstall. Anyway.. thanks! – wallah Oct 29 '17 at 10:07
  • Glad it helped. Enjoy coding. – CermakM Oct 29 '17 at 11:38
1

If you have two python version in anaconda suppose 3.6 and 3.7 and you want to change the default version follow this step.

$ python --version
Python 3.7.3
$ python3.6 --version
Python 3.6.9
$ alias python=python3.6
$ python --version
Python 3.6.9

Parth chokhra
  • 91
  • 1
  • 6