how do I solve the Pylance(reportMissingImports)? - python

I used pip install fastapi to download it in my virtual environment, in terminal but when I try to import from it it shows up as a missing import.

If you want to install a package into your specific virtual environment, you need to first "activate" that environment. Likewise, if you want to run your script in that environment, you need to first "activate" it. You can do this manually or preferably let VSCode handle it for you.
In order to tell VSCode(especially the language server which is pylance) to use that environment:
Open up your Command Palette(ctrl+shift+P) and type : "python: select interpreter".
Browse/Select your newly created python interpreter path inside your venv.
Add "python.terminal.activateEnvironment": true to your setting.json file. This will automatically activate your venv(If it detects your Python's path points to a venv interpreter of course) whenever you open your integrated terminal(You have to have a Python file opened in your editor).
You can also set your Python's interpreter path manually:
Create a folder called .vscode in your workspace.
Create a file called settings.json inside it.
Add this to settings.json:
"python.defaultInterpreterPath": "PATH_TO_VENV_INTERPRETER",
Note: What I normally do is, I insert a "python.defaultInterpreterPath" key to my User settings.json which points to my global interpreter. Then I create Workspace settings.json for each of my projects and add the same key which points to my venv's interpreter. Remember, workspace settings.json will overwrite user's settings.json.
This way whenever you open VSCode in a project folder it automatically knows it should activate your venv's interpreter(I told it to do so with "python.terminal.activateEnvironment") and if you open VSCode in a normal folder it correctly use your global's interpreter.
Difference between User and Workspace settings.json.

Please select the appropriate interpreter for your running environment.
ctrl+shift+P
and then choose the one like picture.

Related

VSCode with pyenv-virtualenv, trigger automatically?

Recently I've been using pyenv-virtualenv for my python projects and with the vscode extension "Python Environment Manager", and I love the combo.
However I currently need to activate the virtualenvs manually through the plugin.
Does anyone know if there's a good way and have tested it to do it automatically?
Can I for for example create some kind of file structure that would allow vscode to automatically select the right pyenv-virtualenv when I open a file in a specific repo/folder?
Open a folder as a workspace
Use the command to create a new virtual environment in the terminal,
The above command will generate a .venv folder in the current workspace, which is a virtual environment named .venv
Select the .venv virtual environment interpreter in the Select Interpreter panel
New terminals will automatically activate the environment
When you open this folder with vscode next time, VScode will select the last interpreter by default. If you have not changed it, then you will select the .venv virtual environment by default when you open this folder in the future.

VSCode does not recognize venv

When I create a new project and the virtual environment using the venv python package, VSCode doesn't recognize the new virtual environment. I follow the bellow instruction:
https://code.visualstudio.com/docs/python/environments
The command that I use in the VSCode integrated terminal is:
python -m venv .venv
The terminal that I use is PowerShell 7, But I tried the CMD terminal too.
After running this command, the .venv folder is created very well on the workspace and I checked its behavior on the terminal.
I tried conda package manager to create a venv and VSCode recognizes it. The problem is only with the venv Python package.
I also tried another Python version to create venv, But the problem still exists.
I read this question:
How can I set up a virtual environment for Python in Visual Studio Code?
I know how to add an environment manually, but I expect VSCode to recognize my environments automatically.
I added these lines to settings.json (Preferences):
"python.venvPath": "~/.venv",
"python.venvFolders": [
"~/.venv/Scripts"
]
I activated the venv manually using VSCode integrated terminal.
The problem still isn't solved.
This is a screenshot of my problem:
I know how to add an environment manually, but I want it to be automatic.
I tried VSCode on another PC, and it worked; It doesn't need anything to do except the presence of venv.
VSCode Version: 1.58.0
Python Extension Version: v2021.6.944021595
The "python.venvPath" should be set to the parent folder of the .venv folder.
Virtual environments located in the folder identified by the
python.venvPath setting (see General settings), which can contain
multiple virtual environments. The extension looks for virtual
environments in the first-level subfolders of venvPath.
But, you need not set that. The Python extension should find the venv environment, as it is just located under your workspace folder.
Virtual environments located directly under the workspace (project)
folder.
I tried it locally, it does not work too. It will only show the cached environment path, and the "python.venvPath" does not work either.
And there are some changes of the interpreter storage:
A VSCode internal storage is introduced which will now store the
interpreter settings in the workspace & workspace folder scope.
You can refer to here for more details.
So, it's recommended to select the environment path manually for now.
After writing this command in VS CodeTerminal
python -m venv env
You can simply use
.\env\Scripts\Activate
In the same directory path where you have created the virtual enviroment.
For some reason VSCode had uninstalled all my Python extensions including the main Python extension. After reinstalling them it was able to detect my virtualenvs again.
So I was having this same issue and I resolved it by,
1. Open Settings in VSCode.
2. Search for "python.terminal.activateEnvironment"
3. If unchecked/unticked, then check/tick for both "User" and "Workspace".
The problem is not with VSCode but the workspace settings in which I was working on.
Just changed that and Voila works like a charm.

How to set a Python Interpreter from inside a existing virtual environment in Visual Studio code

I want to open an existing virtual environment in Visual Studio Code. When I try to change the interpreter address inside of the settings.json (as instructed by https://code.visualstudio.com/docs/python/environments#_global-virtual-and-conda-environments) it doesn't work. With the virtual environment that I have, there is no python.exe file, I believe that is the issue as to why the following settings.json file doesn't work.
{
"python.pythonPath": "D:\\GitProjects\\OrganizationApp\\venv1\\bin\\python"
}
First of all Try open the root folder which venv folder resides in with Visual Studio Code.
(If you are on Linux you can just got the directory and open terminal and type code).
You should get a pop up to change the interpreter.
If not then Open your command palette Ctrl + Shift + P
Search for Python interpreter and select the Venv one.
According to your description, you could refer to the following steps to check the creation and use of the virtual environment in VSCode:
Prerequisites.
Check if python is available.
Enter cmd from the computer, enter the cmd window, enter python, and output the python version number to represent python is available.
If it is not available, please check the python installation package and check the python environment variables.
The python extension was successfully installed in VSCode.
Create and use a virtual environment:
Create a virtual environment in the vscode terminal. python3 -m venv ./venv1 or python -m venv ./venv1 Reference: virtual environments.
Select Yes when the prompt box pops up.
Then the interpreter will automatically be replaced with the created virtual environment.
After restarting VSCode, there is no python interpreter displayed in the lower left corner. We can create or open a python file and it will automatically display the interpreter.
Click on the interpreter to choose other available interpreters.
Use the shortcut key Ctrl+Shift+` to open a new terminal and enter the virtual environment.
Update:
When I open other projects or don’t open any project in VSCode , the virtual environment created before is not displayed in the python interpreter options. The reason is that the virtual environment we created is based on the current project and it exists in this project. like this:
Although this virtual environment is not displayed in other projects, I can use this virtual environment by selecting the python.exe of the virtual environment ( 'enter interpreter path' '.venv' 'Scripts'). Therefore, if there is no python.exe, it is recommended to create a new virtual environment.

Python not showing existing venv in interpreter select

I have a shared flask web project I am working on with 2 other developers, one of the developers initialized the venv on his pc, uploaded his project structure to github from where I cloned his repo.
Now I when I start vscode and open the project folder, python does not auto detect the venv and asks if it should set is as the interpreter, the only option I have is the default system wide python install, and not the venv python interpreter.
I tried adding it to the list by using the command python:select interpreter and then finding the python.exe inside the venv/scripts folder, but this does not work and vscode still asks for a interpreter.
I also tried manually adding it inside of my workspace settings.json file like so
"python.pythonPath": "C:\\laragon\\www\\Proftaak\\venv\\Scripts\\python.exe"/
But vscode also gives an error on this saying the interpreter is not valid.
How would I fix this?
This is not expected to work as virtual environments are not designed or meant to be movable. They are meant to be created on each machine you need a virtual environment on. As such, I suspect that the virtual environment does not work outside of VS Code which could prevent it from selecting it as a possible working environment.

Auto activate virtual environment in Visual Studio Code

I want VS Code to turn venv on run, but I can't find how to do that.
I already tried to add to settings.json this line:
"terminal.integrated.shellArgs.windows": ["source${workspaceFolder}\env\Scripts\activate"]
But, it throws me an 127 error code. I found what 127 code means. It means, Not found. But how it can be not found, if I see my venv folder in my eyes right now?
I think it's terminal fault. I'm using Win 10 with Git Bash terminal, that comes when you install Git to your machine.
This is how I did it in 2021:
Enter Ctrl+Shift+P in your vs code.
Locate your Virtual Environment:
Python: select interpreter > Enter interpreter path > Find
Once you locate your virtual env select your python version:
your-virtual-env > bin > python3.
Now in your project you will see .vscode directory created open settings.json inside of it and add:
"python.terminal.activateEnvironment": true
don't forget to add comma before to separate it with already present key value pair.
Now restart the terminal.
You should see your virtual environment activated automatically.
Actually the earlier suggested solutions didn't work for me, instead I added the following in my settings:
"settings": {
"python.terminal.activateEnvInCurrentTerminal": true,
"python.defaultInterpreterPath": "~/venv/bin/python"
}
Of course replace the defaultInterpreterPath (used to be pythonPath) setting with your own path (so don't copy/paste the second line).
You don't need this line at all. Just remove it and switch your Python interpreter to point to the one within your venv. Here's a relevant documentation (italicized emphasis mine):
To select a specific environment, use the Python: Select Interpreter
command from the Command Palette (Ctrl+Shift+P).
... and
opening a terminal with the Terminal: Create New Integrated Terminal
command. In the latter case, VS Code automatically activated the
selected environment.
Once you switch the interpreter VS code should create a .vscode folder within your workspace with a settings.json indicating the python interpreter. This will give VS code the direction of where to locate the venv.
There is a new flag that one can use: "python.terminal.activateEnvironment": true
my scenario was pretty much the same. I am running VSCode on Windows, wanting to used git bash as my default Terminal but after the venv got created, it was doing some weird stuff when a Terminal would open where it couldn't find the correct python interpeter in the venv/Scripts folder even though I did ctrl-shift-p a bunch of times to reset it to the python.exe there. I also wanted to make sure the activate script was run on Terminal open. I just couldn't get the debugger to work right and it kept complaining that it could not find the python interpreter, so I basically couldn't debug at all.
So for anyone who is having weird stuff happen trying to use a Git Bash Terminal in VSCode in Windows related to a python project using a virtual env, here is what I found out;
I noticed that when I opened a new Git Bash Terminal, and looked at the $PATH variable to make sure it could find the interpreter in the venv, the path to the venv/Scripts folder would be prepended to the $PATH, but not with linux path separators like everything else in $PATH but with a Windows style path;
echo $PATH
C:\Users\blah\Documents\blah\Stock-down\Dev\this_api\venv/Scripts:/c/Users/blah/bin:/mingw64/bin:/usr/local/bin:/usr/bin:/bin:/mingw64/bin:/usr/bin:/c/Users/blah/bin:/c/Program Files/Go/bin:/c/Python39/Scripts:
So whenever I would try to debug, or just even run which python, It would get confused and thought the interpreter was in here;
which python
C:\Users\blah\Documents\blah\Stock-down\Dev\this_api\venv/Scripts/C/Users/blah/Documents/blah/Stock-down/Dev/this_api/venv/Scripts/python.exe
I ran the "printenv" command in the Terminal to see what env vars were getting set and why the venv interpreter path was getting messed up. And I found a env var I didn't know existed - VIRTUAL_ENV. But I didn't know how it was getting set or where it came from. After some pain, and hunting around I found it - when you run "python -m venv venvname" to create the virtual env in the project folder, as you know, it creates the activate (and activate.bat for windows) scripts in the ./venv/Scripts folder. Inside these files this VIRTUAL_ENV variable is not only exported, but but prepended to the $PATH variable on Terminal open with the "/Scripts" folder name added in linux path style. The problem with is that it sets the VIRTUAL_ENV value with windows type path - I know its painful and wrong to do this, but I just changed it to what Git Bash is expecting, see below;
#unset irrelevant variables
deactivate nondestructive
#VIRTUAL_ENV="C:\Users\blah\Documents\blah\Stock-down\Dev\this_api\venv"
VIRTUAL_ENV="/c/Users/blah/Documents/blah/Stock-down/Dev/st_api/venv"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/Scripts:$PATH"
export PATH
Now when a new Git Bash Terminal is opened it prepends the venv/Scripts path correctly to $PATH;
echo $PATH
/c/Users/blah/Documents/blah/Stock-down/Dev/st_api/venv/Scripts:/c/Users/blah/bin:/mingw64/bin:/usr/local/bin:/usr/bin:/bin:/mingw64/bin:/usr/bin:/c/Users/blah/bin:/c/Program Files/Go/bin:/c/Python39/Scripts:
I also made a copy of the executable python.exe in the ./venv/Scripts dir and just called it "python" and now the command "which python" works and I can debug fine. I still set ctrl-shift-P when I choose the interpreter in VSCODE to "python.exe" when I just use "find" during the selection.
For more information on VIRTUAL_ENV var, see this doc -- python venv docs
It feels like jumping through a bunch of hoops I know, but this way I can open a new Git Bash Terminal, have the activate script run correctly on Terminal Open, debug, and operate normally without having to float between Git Bash AND WSL Ubuntu AND Powershell, etc.
My environment started to activate automatically after the advice from this article
When you create a new virtual environment, a prompt will be displayed
to allow you to select it for the workspace. This will add the path to
the Python interpreter from the new virtual environment to your
workspace settings. That environment will then be used when installing
packages and running code through the Python extension. For examples
of using virtual environment in projects, see the Python, Django, and
Flash tutorials.
My solution was to create /.vscode/settings.json manually
Here is the tree;
├───django
│ ├───.vscode
│ │ ├───settings.json
I created /.vscode/settings.json then added this code in settings.json (I am using windows so I used double backslash for path location otherwise it gives unicode error, and don't copy paste this, find your own .virtualenvs)
{
"python.defaultInterpreterPath": "C:\\Users\\Talha\\.virtualenvs\\django-okd21pq9\\Scripts\\python.exe"
}

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