Create a file named main.py. A simple FastAPI instance:

```python
from fastapi import FastAPI

app = FastAPI()

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

To run the instance:

```
uvicorn main:app --reload
```


FastAPI Tutorial

FastAPI can be installed with pip via:

```
pip install fastapi
```

Additionally, you will need to install Uvicorn because FastAPI needs an AGSI server to operate. You can install it with pip as well via:

```
pip install uvicorn[standard]
```

California State University, San Bernardino

FastAPI is a high-performance web framework for building API's. FastAPI is open source. This is one of the fastest Python web frameworks available matching the speed of NodeJS and Go.

Learn Before

Related

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