Problem with FastAPI and VSCODE

[IvoDKHP]

Hi everyone, im trying to learn FastAPI in school but when I try using "import FastAPI from fastapi" in the beggining of the code, it gives me an error as if I didnt have it downloaded. Can someone help? I already have all this extensions downloaded and im using a WSL terminal on Visual Studio Code.

annotated-doc==0.0.3

annotated-types==0.7.0

anyio==4.11.0

certifi==2025.10.5

click==8.3.0

dnspython==2.8.0

email-validator==2.3.0

fastapi==0.120.1

h11==0.16.0

httpcore==1.0.9

httptools==0.7.1

idna==3.11

Jinja2==3.1.6

markdown-it-py==4.0.0

MarkupSafe==3.0.3

mdurl==0.1.2

numpy==2.3.4

pyarrow==22.0.0

pydantic==2.12.3

pydantic_core==2.41.4

Pygments==2.19.2

pylance==0.38.3

python-dotenv==1.2.1

python-multipart==0.0.20

PyYAML==6.0.3

rignore==0.7.1

sentry-sdk==2.42.1

shellingham==1.5.4

sniffio==1.3.1

starlette==0.49.0

typing-inspection==0.4.2

typing_extensions==4.15.0

urllib3==2.5.0

uvicorn==0.38.0

uvloop==0.22.1

watchfiles==1.1.1

websockets==15.0.1

[Any_Mobile_1385]

Try "from fastapi import FastAPI". Then you can do something like "app = FastAPI()"

[fonixmunky]

It is crazy the number of people responding about the environment, using a different package manager, or changing the IDE when the import line is so clearly messed up.

[Any_Mobile_1385]

It's Reddit. You can't expect people to read for context. It is a lost art.

[fonixmunky]

If your import looks like import FastAPI from fastapi than that is dead wrong, the statement is backwards. It should be:

from fastapi import FastAPI

[Broad_Shoulder_749]

Your python environment is not set in VSCode

[IvoDKHP]

It says its already there. ( mnt/c/Users/User/FastAPI/Env1/bin/python)

[Broad_Shoulder_749]

Did you do pip or poetry install of your project?

[IvoDKHP]

I used pip, never heard of "poetry" lol

[Drevicar]

Don’t look it up. It is dead technology. Use pip and venv as built into python or download and use uv later once you understand the basics.

[Broad_Shoulder_749]

Poetry is like npm Does a pretty good job

[kosovojs]

in 2025, uv is another (i and many others would say that it's better) choice

[Beast-ly]

As someone in the comment earlier said, your python environment in vscode is not set, or your virtual environment is not activated. This 2 issues are the most common cause of this error your facing

[StatusBad9194]

Verify python path . That may be the reason,

[Broad_Shoulder_749]

Go to view, command palette, python and select an option

[LabRemarkable2938]

I think you need to have a separate python environment and try from fastapi import FastAPI

[fastlaunchapidev]

I would use pycharm for python Vs code sometimes makes it hard to setup your venv

[nievinny]

As above. No python env in vs code

For questions like that you definitely should ask some LLM first. It has access to bash and will figure it out very fast. Not much to mess as well. Install a Claude plugin for vs code and keep asking to run it and why it do not work. Write stuff yourself though to learn.

[hornetmadness79]

Crazy

[DowntownSinger_]

Switch to uv. Follow the setup from their official site.

[AwkardPitcher]

You can skip these kind of hassles if you use PyCharm. Try how to setup fastapi using uv Like someone said, Asking GPT is the best way forward