I just downloaded Python 3.6.1, but when I type python3 -V in the terminal it's still Python 3.5.3. How can I make python3 point to Python 3.6? All versions are in the /usr/bin/ directory.
7 Answers
do
rm /usr/bin/python3
ln -s /usr/bin/python3.6 /usr/bin/python3
much better solution:
Damn, Python is used throughout much of Ubuntu for system scripts and software, and software relies on having Python (and the commands to start Python) in a certain spot. do back then.
rm /usr/bin/python3
ln -s /usr/bin/python3.5 /usr/bin/python3
create alias in ~/.bash_aliases
alias python3='/usr/bin/python3.6'
Scripts can then start with something like:
#!/usr/bin/env python3
6 Comments
ian-campbell
ln: failed to create symbolic link '/usr/bin/python3.6': File exists
Laurent S
You need to swap the arguments for
ln to work: ln -s /usr/bin/python3.6 /usr/bin/python3
tso
sorry :/ <code> ln -s /usr/bin/python3.6 /usr/bin/python3</code>
ian-campbell
This solution actually broke my Ubuntu terminal. Something in the background is/was depending on
python3 pointing at Python 3.5.3 and not Python 3.6.1. Not sure what, though.tso
Damn, Python is used throughout much of Ubuntu for system scripts and software, and software relies on having Python (and the commands to start Python) in a certain spot. do back then.<br/>
rm /usr/bin/python3 ln -s /usr/bin/python3.5 /usr/bin/python3 create alias in ~/.bash_aliases alias python3='/usr/bin/python3.6' Scripts can then start with something like: #!/usr/bin/env python3 |
Worked Perfectly...
ln -sf /usr/bin/python3.5 /usr/bin/python3
Comments
You could update the default python version system-wide using update-alternatives command.
$ sudo update-alternatives --set python3 /usr/bin/python3.6
or you can also run the following command to choose among the various python versions installed on a host.
$ sudo update-alternatives --config python
Comments
first step
ln -sf /usr/bin/python3.6 /usr/bin/python3
second step
vim .bashrc
alias python3='/usr/bin/python3.6'
Comments
If you are looking for other than the accepted answer. Here is the solution that saved my life. This is to replace it with new version.
$ python3 --version
Python 3.5.2
$ ls -lh /usr/bin/python3
lrwxrwxrwx 1 root root 9 Mar 23 2016 /usr/bin/python3 -> python3.5
$ sudo mv /usr/bin/python3 /usr/bin/_python3
$ sudo cp /usr/bin/python3.6 /usr/bin/python3
$ python3 --version
Python 3.6.11
Comments
It happened to me and after reading a lot, finally it worked running the following commands:
- show the executable that will be run under the hood. pyenv which python3 pyenv which python
--> they showed different version 3.9.1 and 3.13.1
Finally I run the following commands:
pyenv shell 3.13.1 -- select just for current shell session pyenv local 3.13.1 -- automatically select whenever you are in the current directory (or its subdirectories) pyenv global 3.13.1 -- select globally for your user account
and finally... $ python3 --version Python 3.13.1
$ python --version Python 3.13.1
$pyenv which python /Users/molina/.pyenv/versions/3.13.1/bin/python
Now everything works!!
sudo apt-get install python3.6