Make python3 to be default version in Linux

Question

I am trying to start work with Python on a new Linux server.

I have installed python3 however when I try to do pip install it throws an error saying pip-install error code as below:

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-cerbjz/apache-airflow/

When I try pip install --upgrade setuptools it returns Requirement already up-to-date: setuptools in /usr/local/lib/python2.7/site-packages (40.6.3)

When I do which python it returns the below:

alias python='python3'
/usr/bin/python3

When I open the bashrc file its empty though I had entered the above code in there earlier but it's no longer showing this.

How could I modify this such that the interpreter uses python 3 for all processing.

If you are using Ubuntu or Debian, it should be explained here: https://askubuntu.com/questions/320996/how-to-make-python-program-command-execute-python-3 For other Linux distributions, it should be similar. — mkrieger1, Jan 11 '19 at 09:55
You may want to use a virtualenv for each of your projects to ensure you're always using the right version of python. More info can be found here: https://docs.python-guide.org/dev/virtualenvs/. — Ghorich, Jan 11 '19 at 09:56
did you install python3 correctly? if you type `python3` or `which python3`, what does it return? — Sugimiyanto, Jan 11 '19 at 10:04
@Sugimiyantosuma could you please advice do I check /usr/bin the folder. From the terminal — dark horse, Jan 11 '19 at 10:12
@aless80 the problem I have is when I do pip3 -V it returns "pip 18.1 from /home/ec2-user/.local/lib/python3.6/site-packages/pip (python 3.6)" that's why I am not sure what to do here.. — dark horse, Jan 11 '19 at 10:22
@darkhorse try to copy /urs/bin/pip to /urs/bin/pip3 and edit it. Notice the python version in the first line of the file (use python3). Maybe not needed but after copying check permissions of the files are the same with ls -l /urs/bin/pip* — aless80, Jan 11 '19 at 10:26

aless80 · Answer 1 · 2019-01-11T10:29:13.237

0

I suggest using https://bootstrap.pypa.io/get-pip.py and checking @Mulagala's answer here: stackoverflow

I also suggest getting familiar with how to check python and pip commands and their versions, for example

pip -V
pip3 -V  #install it if you do not have it
python --version
python2.7 --version

edited Jan 11 '19 at 10:29

answered Jan 11 '19 at 10:05

aless80

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Make python3 to be default version in Linux

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