Why databases persist data in FastAPI - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the FastAPI class.

FastAPI

from fastapi import [1]
app = FastAPI()

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ADepends

BFastAPI

CResponse

DRequest

Attempts:

3 left

💡 Hint

Common Mistakes

Importing Request or Response instead of FastAPI.

The FastAPI class is imported to create the app instance.

2fill in blank

medium

Complete the code to define a GET route that returns a welcome message.

FastAPI

@app.[1]("/")
async def root():
    return {"message": "Welcome!"}

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Aget

Bpost

Cput

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using post or put instead of get for a simple retrieval.

The GET method is used to retrieve data from the server.

3fill in blank

hard

Fix the error in the code to connect to a SQLite database using SQLAlchemy.

FastAPI

from sqlalchemy import create_engine
engine = create_engine("sqlite:///[1]")

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Adatabase.db

Bdb.sqlite3

C:memory:

Dmemory

Attempts:

3 left

💡 Hint

Common Mistakes

Using :memory: creates a temporary in-memory database, not persistent.

The database file name must be specified correctly for SQLite connection.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that stores word lengths for words longer than 3 characters.

FastAPI

{word: [1] for word in words if len(word) [2] 3}

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Alen(word)

B==

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using equality or less than instead of greater than for filtering.

The dictionary stores the length of each word, but only for words longer than 3 characters.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that stores uppercase keys and values for items with positive values.

FastAPI

result = [1]: [2] for k, v in data.items() if v [3] 0}

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Ak.upper()

Bv

C>

Dk.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using k.lower() or wrong comparison operators.

The comprehension creates a dictionary with uppercase keys and their values only if the value is positive.