[Solved] Identify the issue in the following FastAPI code snippet:def fetch_value(): return 10 @app.get('/value/') def get_value(val: int = Depends(fetch_value())): return {"val": val} | FastAPI

FastAPI - Dependency Injection

Identify the issue in the following FastAPI code snippet:

def fetch_value():
    return 10

@app.get('/value/')
def get_value(val: int = Depends(fetch_value())):
    return {"val": val}

AThe dependency function is called immediately instead of passing the function itself.

BThe route decorator is missing parentheses.

CThe return type of the dependency function is incorrect.

DThe endpoint path should not start with a slash.

Step-by-Step Solution

Solution:

Step 1: Analyze the Depends usage
Depends expects a callable (function), not the result of a function call.
Step 2: Identify the mistake
Using Depends(fetch_value()) calls the function immediately, passing its return value instead of the function.
Step 3: Correct usage
It should be Depends(fetch_value) without parentheses.
Final Answer:
The dependency function is called immediately instead of passing the function itself. -> Option A
Quick Check:
Depends requires a callable, not a function call [OK]

Quick Trick: Pass function to Depends, not function call [OK]

Common Mistakes:

MISTAKES

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