I used Sublime Text so far for my Django / Python developments but I want a more complete IDE including debug and console built and my choice was focused on VS COde
the problem is that I have a little trouble to start, or more exactly to launch a project
I developed a project in a virtual environment venv
I can not activate this virtual environment from VS Code Console
I read the VS Code doc about it and you have to select a Python interpreter Ctrl + Shift + P but I do not see my virtual environment
can someone explain to me and help me?
thanks in advance
This depends on what implementation of virtual environments you are using.
If you are using the standard venv or an implementation that's similar to it, such as virtualenv, just create the environment in a subfolder of your project, like this:
It will be auto-detected in this case. If you are using something like virtualenvwrapper or pipenv, the environments should be auto-detected as well.
However, if VSCode is failing to find your environment automatically, you may set the path to it manually. Inside your project root, create .vscode/settings.json with the following in it:
{"python.pythonPath": "path/to/python.exe"}
Related
Although I'm enjoying developing in Python in Visual Code, I'm finding managing virtual environments and packages frustrating, and particularly am struggling with installing packages in the right place. Here's my sequence of steps, and the problem I then have - I wonder if anyone could kindly tell me where I've gone wrong? Or do I really need to include the full Python path?
So first I create a new virtual environment:
I can see that this works:
I then choose to use the Python interpreter in this new virtual environment (I can't quite see why I have to do this - surely this should happen as part of the activation process - but I can live with it):
At the bottom left corner of my screen, I get the reassuring fact that I'm using the right Python interpreter:
I then install a package (I've chosen requests more or less at random):
However, this is going in my default Python location. To get it in my new virtual environment, I seem to have to include the full path to the Python interpreter:
This can't be right, although it does work - I can now see the installed package:
Can anyone help please?
Personally I haven't had luck using PowerShell (due to permissions to run PowerShell scripts) so I use Command Prompt in VS Code instead.
For PowerShell, perhaps activating your environment using Scripts\activate.ps1 will work instead. From the docs at:
https://docs.python.org/3/library/venv.html
# PS C:\> <venv>\Scripts\Activate.ps1
StackOverflowExample\Scripts\Activate.ps1
It is a bit confusing in VSCode having an interpreter selected and a different Command Prompt/Power Shell terminal used to install packages into a virtual environment.
Another confusing point is running StackOverflowExample\Scripts\activate doesn't suggest you are doing anything is wrong.
I agree with Jason Cook. activate.bat used to activate the environment in Cmd, you should take Activate.ps1 instead of activate.bat.
But you need not activate the environment by yourself. The Python extension can choose the right one to activate the environment for you when you create a new terminal.
After you select the interpreter, you need to create a new terminal. In general, we take a shortcut of Ctrl+Shift+`.
And if you want to turn off this function, you can set this in the settings.json:
"python.terminal.activateEnvironment": false,
OK, thanks to Jason/Steven I have finally got the hang of what you should be simple, but isn't. Here's what I reckon is the easiest way to create and activate a Python virtual environment in Visual Studio code. Let's say I start with the Tutorial environment active, and want to create one called ForeignHoliday (we can but dream). Start by creating the new environment in the VS Code terminal:
This creates the environment:
However, it doesn't activate it, nor does it change the default Python interpreter to use the one for the new virtual environment. You can do both of these things in one go by choosing an interpreter - click here at the bottom left of the VS Code screen:
You can now select an interpreter - your new virtual environment (irritatingly) won't be listed yet, so you'll have to find it:
Choose to find your interpreter:
Double-click on the Python interpreter in the Scripts folder in your new virtual environment (the pythonw alternative doesn't invoke a terminal window, so most people should avoid this - see this SO article):
Now press SHIFT + CTRL + ' to start a new terminal window (NOT just CTRL + ', as this switches you to an existing terminal window). You should see this:
You can now install and import packages and they will all be in the right place! I wish I'd read this answer a few days ago ...
So I started programming 1 -2 months ago with python and I am using Sublime Text3. I tried to read about it but I don't seem to understand how to link my virtualenv to my python project.
When I create my virtualenv in the terminal (I am on macOS) and I open a new project in sublime I can't import my installed modules. How do I add the env to my python project?
I would suggest taking a look at PyCharm (instead of sublime). It's a great IDE for python.
I'm not sure how sublime works, but on PyCharm you can set an interpreter for a project and give it the path to your virtual env. Maybe there's something similar in sublime as well..?
My venv paths are usually something like wherever_you_store_your_project/project_name/venv/bin/python
EDIT
The venv in the path is how I name my virtual environments
I'm having trouble getting python in vs code to work properly. There were problems for a while (i dove right in with a workspace folder) so I decided to set up everything from scratch by starting a new project/workspace folder.
so far I've been having a few issues. The latest is this: despite creative a virtual environment as instructed on the vs code website, I can't get python to recognize that I've already installed the modules I want to use.
How do I fix this? (please see attached picture.
towards the bottom you can see that the virtual environment already has matplotlib, but python wouldn't recognize the module anyway
Create your virtual environment (e.g I used venv module to create a virtual env called TEST : $python3 -m venv TEST
From VS code go to Command Palette and type Python: Select Interpreter
And then you can choose the location of the desired interpreter (in my case the one from TEST virtual environment
You can always test your virtual environment from the terminal, e.g TEST env
Bash
From Cmd/Powershell normally you should run:
TEST\Scripts\activate.bat
I am fairly new to creating Python applications. I have fooling around with some small tutorials and applications using PyCharm and have always created a new project using the Virtualenv environment, ending up with a "venv" folder under my project folder. I have not had any problems with this, but then again I have not done any large projects.
However, I have been wanting to learn Flask want to try to create a new Flask project the proper way. I see in many tutorials that people are creating (and activating) the virtual environment from the (Windows/Linux) Command Line instead even though they are using PyCharm and I was just wondering what the difference is?
When I work on a project in PyCharm, created with Virtualenv, I do not activate the venv before working on it. Is this wrong or is this something that is handled by PyCharm? What if the venv is created from a Command Line? Is it still handled (activated) by PyCharm if working on the project there. And what about the folder structure? Is this affected by how the virtual environment is created? Is there somewhere I can find some "best practices" for the setup / folder structure when creating Flask project within a Virtual Environment?
PyCharm activates the VirtualEnv for you if it is configured to use one and told where it is (more specifically, where the respective Python binary in the VirtualEnv is).
There's no real difference between manually created VirtualEnvs and ones created by PyCharm. (Apart from the framework you select to create one in case this is different from what PyCharm is configured with.)
If you want, you can just create one manually and then point PyCharm to it. Either during creation of the project or later using the Settings dialog (see Settings -> Project -> Project Interpreter). It will then treat it no differently and also activate it for you when working inside the IDE.
A virtual environment is pretty much just a folder which stores installed Python packages and isolates them from the rest of your system. This is so you can work on different projects which may all have competing requirements for external packages, without getting into conflicts. "Activating" a virtual environment just sets certain environment variables in your current shell so it'll use packages from this environment. "Activating" an environment never has any impact beyond your current shell. So activating an environment on the command line won't do anything to PyCharm.
PyCharm integrates a Python interpreter to give you lots of extra functionality. You tell PyCharm which interpreter you want to use for your project and it'll figure out what packages it has available, what version it is, and automatically set everything up properly for running your code from PyCharm etc. You can tell PyCharm to use your system's Python interpreter or an existing virtual environment or even use it to create a new environment. You don't need to do anything special beyond just selecting the right interpreter/environment in the project settings.
There's no reason to activate the environment from the command line if you're not going to use it from the command line. Of course, using Flask and running its server from the command line and keeping it running in the background may be useful. Not sure if PyCharm would give you an easy or integrated option to have persistent processes run in the background. You could still select the same virtual environment in PyCharm and use it to run your tests in it directly from PyCharm, use its debugger etc.
I prefer to keep the venv out of the project folder and store all venvs in ~/.virtualenvs/ or such. It declutters the project folder and prevents accidentally checking those files into the version control system.
I was just wondering what the difference is?
There's many tools for creating and using virtual environments and there's no difference between them, the only difference between them is their commands syntax (or the way it interact with users, e.g. for Pycharm you set some settings via GUI).
Is this wrong or is this something that is handled by PyCharm?
There's nothing wrong with it. As long as you have a venv (or .venv) directory in the root of your project and it is executable for any user, Pycharm will use it and it activates this virtual environment for you (without telling you). If Pycharm was not able to do that, (because of trouble in finding venv or activating/executing it!) then it will show you messages to fix its problems and it can't run your project till you fix them.
It's better to create your virtual environment in .venv directory right into the root directory of your project. (It's kind of conventional)
See python virtual environments and configuring pycharm virtualenv as well.
We are trying to add venv functionality to our python project ie when one runs project an venv is created in project path and project runs on that venv.
For this to work we used vurtualenv's create environment method and activatethis.py the method creates venv ,
However when project runs it still uses host machine packages. Instead of using venv ones
Am I doing anything wrong..is it possible to do this??
PS: I have tried both site-packages true and false in create environment method .. however to no help
Adding more info:
Commands used are
venv_dir = os.path.join("path to project")
virtualenv.create_environment(venv_dir)
execfile(os.path.join(venv_dir, "bin", "activate_this.py"))
Also updated path environment variable to include bin of venv
After this I expect my code (after this) to run in virtual environment.
I am not using any ide and expect the code to create venv at runtime
Using python 2.7
Is there any other way to run project in virtual environment at run time without any ide in Ubuntu server environment.
You haven't provided enough information for us to come up with a solution to your exact problem, although I will do my best to help you out.
You should not be creating a venv every time you run the project, which it sounds like you are doing. This is essentially creating a new interpreter every single time you run your project. If you're using a decent IDE, such as PyCharm, you should be able to set this up properly through the project settings.
There are plenty of tutorials out there regarding setting up venv and virtualenv on your computer, and given that we don't know much about your system, your best bet is doing some further research.
Essentially, you need to
Create a venv for the project (and a new one for each project you make from here on out, unless you want to use the machine's interpreter)
Set the project interpreter to the venv you just created. Place any external libraries within ...\venv\Lib\site-packages
Hope this helps.