So I updated python using these instructions:
sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-devlibsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
then
cd ~/Downloads
wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz
tar -xvf Python-3.5.0.tgz
cd Python-3.5.0
then
./configure
sudo make install
python3.5
Python 3.5.0 (default, Oct 3 2015, 03:16:42)
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
and it worked but when I closed terminal, and wrote python -v it is still python 2.7 and still getting errors executing code that use v3+ standard libraries
How to make it working as 3.5?
//install python 3.6
sudo add-apt-repository ppa:jonathonf/python-3.6
sudo apt update
sudo apt install python3.6
//change default python
sudo rm /usr/bin/python
sudo ln -s /usr/bin/python3 /usr/bin/python
//view default
python -V
You still have Python 2 installed, and the python
command is still set up to invoke that version by default. Try running your scripts like this:
python3 yourscriptname.py
In /usr/bin/, "python" is actually a symlink to python2.7. If you'd rather not have to type the 3 at the end whenever you use python, change that symlink to point to python3 instead. Then python
will run Python 3.5 and you can use python2.7
or just python2
to run Python 2.7 scripts.
EDIT: Alternatively, you could put alias python=python3
in your ~/.bashrc file to do the same thing, but without needing root access and for your user account only.
You might just have destroyed your system python installation by doing
sudo make install
This installs in the default path! And will possibly overwrite anything your linux distro has there to work correctly. Never do sudo make installs if you're not sure where the resulting stuff goes. In case of Python, you should have done
sudo make altinstall
to have it installed next to the default python but the best thing is to install and use the python version via your distro's package manager.
我读到将全局 python 更改为 3.5 会导致一些问题,所以我在 geany 中为 python3 设置了构建命令,我仍然可以通过键入 python3 xxx.py 在外部运行脚本,现在很舒服
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