I’m working on a FastAPI project in VSCode and encountering a persistent issue where my imports for FastAPI are not being recognized (Import "fastapi" could not be resolved).

A problem occurs and after deleting all containers and images, fastapi cannot be imported when entering main.py in the host environment regardless of docker. (Fast API operates in the host environment before docker-compose up --build)

Additionally, when I try to use pip in the terminal within VSCode, I get a zsh: command not found: pip error.

When i enter docker compose run web

I got an error

The virtual environment found in /app/.venv seems to be broken.

Recreating virtualenv untitled folder 2 in /app/.venv.

Under are my codes.

Dockerfile

FROM python:3.11-slim

WORKDIR /app

ENV PYTHONDONTWRITEBYTECODE=1 
    PYTHONUNBUFFERED=1

RUN pip install poetry

RUN poetry config virtualenvs.create false

COPY pyproject.toml poetry.lock* /app/

RUN poetry config --list

RUN poetry install --no-dev --no-interaction --no-ansi

COPY . /app

CMD ["poetry", "run", "uvicorn", "main:app", "--host=0.0.0.0", "--port=8000"]

docker-compose.yml

version: '3.8'
services:
  web:
    build: .
    ports:
      - "8000:8000"
    volumes:
      - .:/app
    environment:
      - PYTHONUNBUFFERED=1

main.py

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return {"Hello": "123"}

1. I have tried resetting the virtual environment and manually setting the Python interpreter in VSCode, but the issue persists.

2. I tried various modifications to dockerfile and dockercompose. but no effect.

3. Changing environment variables in .zshrc and python version of brew, no effect.