Default and Optional Query Parameters in FastAPI
Learn and implement default and optional query parameters using FastAPI.
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Default query parameters
As query parameters are not a fixed part of a path, they can be optional and can have default values. You can assign a default value to the query parameters as shown in the below code:
from fastapi import FastAPI
app = FastAPI()
course_items = [{"course_name": "Python"}, {"course_name": "NodeJS"}, {"course_name": "Machine Learning"}]
@app.get("/courses/")
def read_courses(start: int = 0, end: int = 10):
return course_items[start : start + end]Default query parameters in FastAPI
In the example above, we have set the default values of start = 0 and end = 10. So, when we go to the URL:
http://localhost:8000/courses/