[Solved] Identify the error in this FastAPI dependency usage:def get_limit(limit: int = 10): return limit @app.get("/items") async def read_items(limit = Depends(get_limit(limit=20))): return {"limit": limit} | FastAPI

FastAPI - Dependency Injection

Identify the error in this FastAPI dependency usage:

def get_limit(limit: int = 10):
    return limit

@app.get("/items")
async def read_items(limit = Depends(get_limit(limit=20))):
    return {"limit": limit}

ADefault value in get_limit conflicts with parameter passed

BCannot pass parameters directly inside Depends like get_limit(limit=20)

CMissing type annotation for limit in read_items

DDepends should be imported from fastapi.dependencies

Step-by-Step Solution

Solution:

Step 1: Check Depends usage
Depends expects a callable or a call to a callable without parameters directly inside Depends.
Step 2: Correct way to pass parameters
To pass parameters, wrap get_limit in another function or use a lambda to supply parameters.
Final Answer:
Cannot pass parameters directly inside Depends like get_limit(limit=20) -> Option B
Quick Check:
Depends() must wrap callable, not call with parameters directly [OK]

Quick Trick: Wrap parameterized dependency call outside Depends() [OK]

Common Mistakes:

MISTAKES

Calling dependency with parameters inside Depends directly
Ignoring need for wrapper function
Wrong import path for Depends

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More FastAPI Quizzes

Identify the error in this FastAPI dependency usage:

Step 1: Check Depends usage

Step 2: Correct way to pass parameters

Final Answer:

Quick Check:

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