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FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is designed to be easy to use and to help developers build robust and efficient APIs quickly. FastAPI is known for its speed and automatic interactive API documentation.
When working with FastAPI, you might encounter an issue where static files, such as images, CSS, or JavaScript files, are not being served correctly. This can manifest as missing resources on your web pages, leading to broken layouts or missing functionality.
The root cause of this problem is often related to the incorrect configuration of static file serving in FastAPI. By default, FastAPI does not serve static files, and you need to explicitly set up a mechanism to handle them.
FastAPI is primarily designed for building APIs, and serving static files is not its main focus. Therefore, developers need to configure static file serving manually using the StaticFiles
middleware from starlette
, which FastAPI is built upon.
To resolve the issue of static files not being served, follow these steps:
Ensure that you have fastapi
and uvicorn
installed. If not, you can install them using pip:
pip install fastapi uvicorn
In your FastAPI application, you need to use the StaticFiles
middleware to serve static files. Here’s how you can do it:
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
app = FastAPI()
# Mount the static files directory
app.mount("/static", StaticFiles(directory="path/to/static/files"), name="static")
Replace "path/to/static/files"
with the actual path to your static files directory.
Start your FastAPI application using Uvicorn:
uvicorn main:app --reload
Make sure to replace main
with the name of your Python file if it’s different.
For more information on serving static files with FastAPI, you can refer to the official documentation:
By following these steps, you should be able to serve static files correctly in your FastAPI application, ensuring that all resources are loaded as expected.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)