In VS Code (Windows), my python interpreter points to version 3.11.
python -V in terminal gives me Python 3.11.0
I create a virtual environment with python3 -m venv virtual called virtual, and activate it with .\virtual\Scripts\activate.
Now in my environment, checking python -V gives me Python 3.9.13 instead.
How do I get venv to create a Python 3.11 environment?
You are creating virtual environment with python3 but checking version with just python. I want you to check if python and python3 are pointing same python executable file before creating virtual environment.
May be try creating virtual environment using just python, since its version is 3.11.0.
$ python -m venv virtual
Or you can create virtual environment with specifing the path of your python 3.11 executable file.
$ C:/path/to/your/python3-11-execuatable/python.exe -m venv virtual
In the view tab above click on Comand palette> python interpreter from there you can select python 3.11, otherwise you can add it by clicking on enter interpreter path and then select the path where python 3.11 is located at
Related
I have created a virtual environment using anaconda in VS. When the environment is active. I check the version using python --version, it gives the following output Python 3.9.9, whereas when I use which python and check the version from the path /usr/bin/python --version I get a different version Python 2.7.18. Why is that happening, and which version does the environment use?
Once your virtual environment is activated the python command will use the python version from your venv (located in path/to/.venv/bin/python).
which python and /usr/bin/python forces the use of the python version installed in /usr/bin/python which in your case seems to be version 2.7.18. If you want to change your default Python version (the one thats used with python without a venv being active) you can use sudo ln -s /usr/bin/python /usr/bin/python3.9.
I have created a miniconda virtual environment
conda create --name finalenv python=3.6
Now when I activate it:
conda activate finalenv
and check:
python --version
It says:
2.7.16
Even though I created a virtual environment with python 3.6 version. This is in my Visual Studio Code Terminal. How can I fix this?
If I check python --versionoutside the virtual env, it's 3.8.10.
For example, if I try to install a particular library outside the virtual env, it works fine but throws an error if I run the same command inside the virtualenv since over there, the terminal is using an old python version #Samuel
In VScode do the following:
File -> Preferences -> Settings
Search for "python.pythonPath"
Change path to where you usually run python from (where python 3.6.13 is located on your machine)
I installed Miniconda3 on Ubuntu 16, and used the command
conda create -n py37 python=3.7
to create an env, and use command conda activate py37 to activate the env. But when I use command python --version to check my Python version, it show the version of Python is 3.5.2. So I try to create another env with Python 2.7, but after I activate this env, the version of Python is still 3.5.2.
Debugging
When I type type python, it shows python is aliased to '/usr/bin/python3.5.2'. Then by using the command to edit the .bashrc file, I found that there is a line of statement
alias python='/usr/bin/python3.5.2'
so I tried to change to
alias python='/home/vagrant/miniconda3/envs/django-judge/bin/python'
where the Python version of the env is 3.7. Then when I type type python again, it returns that python is aliased to '/home/vagrant/miniconda3/envs/django-judge/bin/python'. But now, under all envs, the Python version has become Python 3.7.
Remove the alias altogether: it is not compatible with Conda to alias python.
python newbie here.
I am on a windows machine and used Windows Subsystem for Linux(WSL) to execute commands.
I created my venv(folder) by entering:
python3 -m venv venv
and it would give me a new venv folder as below:
and then activated the virtual environment using:
source venv/bin/activate
however, I am having an issue as I executed another command and it is looking for python3 which should be present as in this path: venv/bin/python3
I am curious how should python3 created in venv. Thanks!
i guess you are confused about the Python virtual environment
first, the virtual environment is designed to establish a command execution environment for each project。
then. the first your code python3 -m venv venv call the system python command and the python3 should in /usr/bin/python3 and linked with /usr/bin/python3.x
but, if you activate the virtual environment of Python, the virtualenv will and the {you_dir}/venv/bin to the system path and you will call python through /venv/bin/python
to execute you python code.
there is no need create an link of /ven/bin/python3. but if you want, you can do it!
I currently have Python 2.6.2 installed on my mac. I am writing a script which MUST run on Python 2.5.2. So I want to write a python script, and test is specifically against 2.5.2 and NOT 2.6.2.
I was looking at virtualenv, but it doesn't seem to solve my problem. I ran python virtualenv.py TEST which made a TEST dir, but it had python 2.6 in it. Is there a way to make virtualenv use a different version of python than what's installed default on my machine? Is another way to use the #! as the first line of the python script? How would I do that?
Check out tox; it's designed to do exactly this.
Here is an example of using tox to run a hello_world.py script against multiple Python versions:
Install tox
pip install tox
Create a tox.ini configuration file
[tox]
envlist = py39, p310, p311
[testenv]
commands = python hello_world.py
The envlist option specifies the Python versions to test against
The commands option specifies the command to run in each environment
Run tox
tox
This will create separate environments for Python 3.9, 3.10, and 3.11 and run the hello_world.py script in each environment.
You can setup a sandboxed environment with different python versions using virtualenv. As Kable has done, install the 2.5. version you want to test against. Then create your virtual environment:
virtualenv --p=python2.5 myapp
To get a clean environment you may use the --no-site-packages switch with the command above. Quite handy when trying to simulate a new, fresh setup. Now activate your virtualenv:
source myapp/bin/activate
If you check the python version you should now get version 2.5.x:
python -V
Now you can install modules as you like into your virtual environment in the usual fashion:
easy_install ...
pip ...
To exit your virtual environment:
deactivate
Hope this may be of help.
You could just install a Python 2.5.2.
I have 3 different versions Python installed on my Lucid and they use different links under /bin/ so it's easy to call the specific version
python -> python3 ->python3.1
python2 -> python2.7
python2.5
try #!/path/to/your/python/version
But make sure you execute the script from the terminal, and make it executable before hand: chmod 755 myscript.py
Using 'virtualenv' you can have different isolated Python environments on a single machine. Also you can switch any-time between the different python interpreter versions.
What is virtualenv?
A Virtual Environment is an isolated working copy of Python which allows you to work on a specific project without worry of affecting other projects. It enables multiple side-by-side installations of Python, one for each project. It doesn’t actually install separate copies of Python, but it does provide a clever way to keep different project environments isolated.
How to install?
pip install virtualenv
To create virtual environment for python 2.7 :
root:~# which python2.7
/usr/bin/python2.7
root:~# which python3.4
/usr/local/bin/python3.4
You can also use a Python interpreter of your choice:
root:~# virtualenv -p /usr/bin/python2.7 Vpy27
Running virtualenv with interpreter /usr/bin/python2.7
New python executable in /root/Vpy27/bin/python2.7
Also creating executable in /root/Vpy27/bin/python
Installing setuptools, pip, wheel...done.
To begin using the virtual environment, it needs to be activated:
root:~# source Vpy27/bin/activate
The name of the current virtual environment will now appear on the left of the prompt:
(Vpy27) root:~# python -V
Python 2.7.3
Install packages as usual, for example:
(Vpy27) root:~# pip install junos-eznc >> All pip installs done here, will be available only in this environment.
If you are done working in the virtual environment for the moment, you can deactivate it:
(Vpy27) root:~# deactivate
To create virtual environment for python 3.4:
root:~# which python3.4
/usr/local/bin/python3.4
root:~# virtualenv -p /usr/local/bin/python3.4 Vpy34
root:~# source Vpy34/bin/activate
(Vpy34) root:~# python -V
Python 3.4.4
There is also a way to create virtual environment with already available site-packages.