I am working on a project through PyCharm. When I started the project, the project interpreter was a newly created virtualenv located in my project folder at /path/to/project_folder/venv and using base interpreter /usr/bin/python3.6.
When working in PyCharm, the Python Console seems to be using the right venv/Python executable etc. Running os.system("which python") returns /usr/bin/python.
Next, I activate this venv through my terminal (on Ubuntu 18.04) using the command source /path/to/project_folder/venv/bin/activate which works fine and shows me that it is activated with a (venv). However, if I run which python, it returns /home/user/anaconda3/bin/python.
Why is this occurring? How can I access the same Python interpreter from the PyCharm console through my Ubuntu terminal?
Same happened to me in a specific project.
Symptoms:
No executable taken from the venv; i.e:
which python3 from bash is not taken from venv
Python packages are not working from venv
Cause:
You renamed your project folder
Virtual environment PATH keeps old path to venv
It fails silently
Solutions:
Create a new venv and reinstall requirements, OR
Rename folder to its old name
Change PATH is not the solution. venv script creates some other routes in various files.
Note: Tested with python3 -m venv venv
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 not able to activate the venv available in my project directory.
When I do the following it still doesn't activate the venv and I am not able to use python or pip installed in my venv.
/my_project$ source venv/bin/activate
(venv) /my_project$
It does show that the venv is activated but when I check python and pip, version and location it shows that both are from the root dir usr/bin/python & usr/bin/pip.
Venv Installation Process
/my_project$ python3.10 -m venv venv
It's working well in my new directory and I am also able to activate the venv but my existing venv in the project folder that I created yesterday is not starting. I am new to Linux and don't know much about it but I believe it has something to do with the Linux reboot as after the reboot this started happening.
Any help would be appreciated. Thanks
OS: Ubuntu 20.04.4 LTS
system python: 3.8.10
python3.10: 3.10.5
perhaps try explicitly setting the python version when creating your venv:
i.e.
/my_project$ python -m venv venv python=python3.10
https://stackoverflow.com/a/61775880/14327910
and from (https://python.land/virtual-environments/virtualenv):
Blockquote
Python 3.4 and above
If you are running Python 3.4+, you can use the venv module baked into Python:
$ python -m venv [directory]
This command creates a venv in the specified directory and copies pip into it as well. If you’re unsure what to call the directory: venv is a commonly seen option; it doesn’t leave anyone guessing what it is.
A little further in this article, we’ll take a close look at the directory that was just created. But let’s first look at how to activate this virtual environment.
I'm currently learning how to make Django projects but the material uses the Linux command shell and the instructors use Macs. I run a Windows machine, so I have to use WSL and Bash.
I'm trying to use the VS Code debugger with a Python virtual environment created in a Bash terminal with WSL. I create my virtual environments by opening up a terminal in VS Code, entering the Bash terminal, then typing python -m venv venvname.
On the bottom right of VS Code there's something like this where I can click on the Python version number to change the interpreter.
If I then click "Enter interpreter path" then "Find" it brings up a Windows Explorer menu where I can direct it to a python executable, but it seems that virtual environments for Linux (created through a Bash terminal) don't have a python.exe. I have a python file with seemingly no extension that I am also unable to open.
I've tried using a venv created with Windows powershell in VSC just for testing purposes. After creating the venv, VSC gives me a notification ask if I want to use the newly created venv (I get no such prompt when creating venvs with bash) and confirming makes the Python version number also indicate that it's using a venv. The files also has an actual python.exe file but it comes with other problems. I can't run the Activate.ps1 script to enter the venv in VSC. I can activate the venv by running command prompt/powershell outside of VSC as administrator, but it seems to have issues installing older versions of packages when I try to install from file with pip install -r requirements.txt.
Operating System: windows10
editor: VSCode (installed extensions: python, Code Runner.)
Python installed on my machine: 3.9.0
1- My project is in this folder "D:\darsy\Python\Learning\Code with Mosh - The Complete Python Programming Course for Beginners 2019-4\11- Popular Python Packages\code\7- Web Scraping\PyCrawler2"
2- I have app.py in this folder
3- I opened this folder in VSCode.
4- I opened VSCode terminal and run this command:
D:\darsy\Python\Learning\Code with Mosh - The Complete Python Programming Course for Beginners 2019-4\11- Popular Python Packages\code\7- Web Scraping\PyCrawler2> pipenv install requests
5- so I have a venv in this directory: "C:\Users\Acer.virtualenvs\PyCrawler2-RWWuk_HY"
6- I changed my python interpreter in VSCode to this venv.
7- I write this code in my app.py file
import requests
8- in VSCode terminal, I run this command:
D:\darsy\Python\Learning\Code with Mosh - The Complete Python Programming Course for Beginners 2019-4\11- Popular Python Packages\code\7- Web Scraping\PyCrawler2> python app.py
9- I got this error: ModuleNotFoundError: No module named 'requests' .
why? I have installed requests package in my venv.
I think it's not specific to this package. any package I install and want to use I get this issue.
Thanks for your helps in advance.
Please select the virtual environment you created in the lower left corner of VS Code, and then use the shortcut key Ctrl+Shift+` to open a new VS Code terminal, it will automatically enter the selected environment:
Then click the run button in the upper right corner of Vs code:
In addition, it is recommended that you use the green run button provided by the "Python" extension to run the code in 'Terminal'.
In order for your app to use the packages installed in the virtual environment, the env needs to be activated.
Activate it by running:
source myenv/bin/activate # linux
python -m venv c:\path\to\myenv # windows
where myenv is replaced by the name of your virtual environment.
You can tell that an env is activated because it will show up at the beginning of each line in your terminal like this: (myenv) user#DESKTOP-001:
After that, when you run python run.py your app will automatically use the packages installed in the env.
You can also check out the virtual environment docs
before running the program I should activate the venv, for this run:
pipenv shell
I am trying to create a new python 3.7 virtual environment on my local computer running Windows 8. I have python versions 3.6, 3.7, and 3.8 installed. Their exe's are named python36, python37, and python, respectively. All three are correctly added to PATH because I can enter each interpreter.
Within my new project's directory I tried to create a virtual environment with python37 -m venv env. It produced an error: Error: [WinError 2] The system cannot find the file specified, but it still created the directory. However the Scripts subfolder is empty except for pythonw.exe.
In this question someone suggests doing python37 -m venv env --without-pip. When I tried this, the activation/deactivation scripts were created, but the virtual environment is using python 3.8.
It is my understanding that venv will create the virtual environment with what ever python exe you use to call it, so I don't understand how this can happen. I've verified that python37 points to the correct place with where python37, and can even enter the 3.7 interactive interpreter.
The problem was that I renamed the python exe's. I don't know exactly what goes wrong, but presumably at some point venv tries to find python.exe and is thrown off by the name.
Changing them back to python.exe and differentiating between the versions with their location fixed the problem.
Edit:
Check out Eryk's comments for more details.
First create folder at any drive then go to that folder and install virtualenv package using pip.
pip install virtualenv
Then create your virtual environment.
mkvirtualenv myvirtualenv
Then use below command to activate virtualenv in windows.
myvirtualenv\Scripts\activate
After this you can install related package in current virtual environment.
The Python Standard Library for Creating Virtual Environment