Where is python intrepreter located in virtual environment ?
I am making a GUI project and I stuck while finding the python interpreter in my virtual environment.
Execute next code and it will print location of your python interpreter.
import sys
print(sys.executable)
To a lot of extents, it depends on how the virtual environment was created. If you installed like this py -m venv env then you would find it here .\env\Scripts\activate . How ever if you created the environment using conda then you would find it here Anaconda_installation_folder/envs/name_of_environment. SO brief answer to your question, you would find it withing you env folder.
If you want to automatically active virtual env or (venv). Try this.
Install virtual env
python3 -m venv venv
If you have already have venv present. you can refer use this to get the executable python3 file like this.
#referred #Arty answer above.
import sys
print(sys.executable)
this will print the python3 path of that venv.
later open command pallet ( ctrl + shift + P ) and type python as shown in image.
Then click on
and paste that path into the input box.
Now the setup is done.
Now every time you open a terminal, it will automatically open your terminal in the virtual env, and will auto-run the virtual env for you.
Related
I have created a virtual environment via the command line
python3.11 -m venv .
source ./bin/activate
python -m pip install NAME_OF_MODULE
source deactivate
I can see the installed modules when I run pip freeze (prior to deactiving). So far so good.
Then I launch VSCode, open a file and using the command palette, I click Python: Select Interpreter. I then navigate in the bin folder of the virtual environment to the Python installation, which consists of a short-cut / alias pointing to a global Python installation.
When I do this, I cannot import Python modules located in the virtual environment, only those in the global environment. In other words, it appears to be selecting the global environment.
Do I need to set this up within VSCode (Python: Create Environment) ? If so, I can only get so far as the official instructions (https://code.visualstudio.com/docs/python/environments) do not cover installing packages within a virtual environment.
Thanks
I managed to do this in VSCode, by choosing the Create Environment command from the Command Palette. This created a .venv folder where the Python installation is contained. Then when I go to select the Python interpreter via the Command Palette, it automatically finds the local installation. Then, I installed packages by opening the command line WITHIN VSCode (no need to activate environment - it is already automatically activated).
So the trick is to create the environment WITHIN VSCode, not using the system shell.
I am just starting to learn django and I am facing the set-up phase. In particular I'd like to ask how to recognize if the virtual environment is activated or not. I know that I can use the command pip freeze but in all the tutorial that I am following, when the venv is activated, I can see the venv name in brackets in the terminal command line.
I can correctly activate the venv with the source command and check via the pip freeze command but I have no indication in the command line.
I am on a Mac/OS(M1) and using python3
thank you
To have visual information about the virtualenv on the command line you need to change the shell config to show it. It's not related to python or django itself.
It will depend on the shell that you are using, but assuming the default shell on mac you can check this question virtualenv name not show in zsh prompt
From venv docs.
When a virtual environment is active, the VIRTUAL_ENV environment variable is set to the path of the virtual environment. This can be used to check if one is running inside a virtual environment.
So you should be able to test it with:
import os
os.getenv('VIRTUAL_ENV') is not None
Yes, when the virtual environment is activated, it shows in the terminal as a prefix like
(env) yourname~Desktop/workspace-folder>
And that is enough to know it is activated, and you are using it.
Since you are using Python 3, you can create your virtual environment as follows in the same directory of your project, open terminal or iTerm and run this comman
python3 -m venv env
After few seconds, a folder env will be created that is your virtual environment. Note you can name your virtual environment as you wish, maybe like python3 -m venv djang-app
After you have created the virtual environment, you can now activate it like
source env/bin/activate
Again, if you created your virtual environment using lets say django-app
python3 -m venv django-app
You can activate it like this
source django-app/bin/activate
and you will see your terminal is prefixed as follows
(django-app) yourname~Desktop/workspace-folder>
To deactivate the virtual environment, you simply run this command deactivate in the terminal with active virtual environment.
You can learn more about python3 venv from here.
For reference, I'm on Windows 11 using the Bash shell and have Python 3.9.2 installed.
I'm trying to create and activate a Python virtual environment using venv but when I activate it, nothing happens, but no error is given either. My understanding is that once I activate it, my prompt should change to reflect the environment I'm working in, and where python should show it in the virtual environment. Can anyone help clear this up for me?
Bash is unlike the normal command line interfaces on Windows. It uses the shell language, hence you'll not be able to activate it using the same procedure.
Since you generated the file from Windows,
to activate the virtual environment, run:
cd example_venv/Scripts
. activate
Take note of the space after the dot. It's very important for it to be included.
For those using Mac OS or Linux, you can just run:
source <path_to_venv>/bin/activate
where <path_to_venv> is the location of your virtual environment.
I'm trying to create and activate a virtual environment, using Windows 10 command prompt. I know that virtualenv is installed correctly, as the command
virtualenv venv
Works. I've navigated to my virtualenv download, Downloads\venv\Scripts, and am trying to activate my virtual environment venv. I've tried
venv activate
Which doesn't work since Windows doesn't recognize venv as a command. I've also tried
virtualenv venv activate
Which also doesn't work since virtualenv is saying that "venv activate" isn't a valid argument.
Use the activate script in the Scripts directory of your virtual environment:
> venv\Scripts\activate
This will activate your virtual environment and your terminal will look like this depending on the directory you're in:
(venv) C:\Users\acer\Desktop>
I hope this helps!
If you're using virtualenvwrapper-win, and using the DOS command prompt (as opposed to e.g. Powershell), then new virtualenvs are created using:
mkvirtualenv myenv
and activated using
workon myenv
You should define the environment variable WORKON_HOME to point to where you want you virtualenvs to reside.
If you've installed virtualenvwrapper-win>=1.2.4 then the virtualenvwrapper command will give you a list available commands:
go|c:\srv> virtualenvwrapper
virtualenvwrapper is a set of extensions to Ian Bicking's virtualenv
tool. The extensions include wrappers for creating and deleting
virtual environments and otherwise managing your development workflow,
making it easier to work on more than one project at a time without
introducing conflicts in their dependencies.
virtualenvwrapper-win is a port of Dough Hellman's virtualenvwrapper to Windows
batch scripts.
Commands available:
add2virtualenv: add directory to the import path
cdproject: change directory to the active project
cdsitepackages: change to the site-packages directory
cdvirtualenv: change to the $VIRTUAL_ENV directory
lssitepackages: list contents of the site-packages directory
lsvirtualenv: list virtualenvs
mkproject: create a new project directory and its associated virtualenv
mkvirtualenv: Create a new virtualenv in $WORKON_HOME
rmvirtualenv: Remove a virtualenv
setprojectdir: associate a project directory with a virtualenv
toggleglobalsitepackages: turn access to global site-packages on/off
virtualenvwrapper: show this help message
whereis: return full path to executable on path.
workon: list or change working virtualenvs
From the directory where you have your virtual environment (e.g. myenv)
you need to run the following command: .\myenv\Scripts\activate
Go to the folder where you have created the virtual environment in cmd and
enter the command .\venv\Scripts\activate
It will activate the virtual env in windows
from the command (cmd) prompt:
call venv/Scripts/activate
Make sure the Python Scripts folder is in your environment variables.
Usually the path is: "C:\Users\admin\AppData\Local\Programs\Python\Python37-32\Scripts"
(Change "admin" to your windows username and "Python37-32" path according to your python version)
When you use "virtualenv" to create an env, it saves an "activate.bat" file in the scripts folder originating from the directory you ran the first command. E.g if you ran the command virtualenv env from C:/Users/Name/Documents/..., the .bat will be located in C:/Users/Name/Documents/.../env/scripts/activate.bat. You can run it from there.
Simply you can activate your virtualenv using command: workon myenvname
You can also create a command-line script like this -
#echo off
CD\
CD "C:\Users\[user name]\venv\Scripts"
start activate.bat
start jupyter notebook
Save this in a notepad file with an extension ".cmd".
You are ready to go
if you have anaconda installed then open anaconda terminal and type
> conda env list # for list of environment you already have
> conda activate {env_name} # to activate the environment
This works for me from Anaconda prompt,
.\\myvenv\\Scripts\\activate.bat
start python 3.7
python -m virtualenv
"You must provide a DEST_DIR"
python -m venv demodjango("demodjango is file name)"
activate.bat
pip install django
django-admin.py startproject demo1 (demo1 is my project)
python manage.py runserver
Performing system checks...
After doing this on a command prompt, you will get an URL. Click on that and you will see a message in the browser window that Django has been properly installed.
I wanted to create a python virtual environment in Windows 7.
I have installed activepython 2.7 32 bit version and installed virtualev using pip command. After that I created a folder named "virtualenv", on drive C. For that folder I have executed the following command.
virtualenv <virtualenv-name>
While executing this command it opens a python file named virtualenv.py. While closing the file, it does not prompt to be saved.
While checking on C:\virtualenv\ I was not getting the virtual environment that I tried to create.
From command line execute:
virtualenv MY_ENV
It will create a virtual env in MY_ENV folder. Than activate it:
MY_ENV\Scripts\activate
Also check the virtualenv user guide.
conda create --name myvirtualenv python=2.7 numpy
This will create a virtual environment of python 2.7 with just numpy or pandas or the full package based on the parameter
First, open cmd and go to the directory where you want your virtual env to be present.
while writing this I have 3.7.5 python installed on my PC.
write below command on cmd.
py -m venv.
for activation of the virtual environment.
open Scripts folder and click on activate file,
for reference visit this website https://docs.python.org/3/library/venv.html