GetItem (reading single item) in DynamoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the table name for the GetItem operation.

DynamoDB

response = client.get_item(TableName=[1], Key={'Id': {'S': '123'}})

Drag options to blanks, or click blank then click option'

A'Orders'

B'Products'

C'Users'

D'Sessions'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a table name that does not exist.

Forgetting to put quotes around the table name.

The TableName parameter must be the name of the DynamoDB table you want to read from. Here, 'Users' is the correct table name.

2fill in blank

medium

Complete the code to specify the key attribute name for the GetItem operation.

DynamoDB

response = client.get_item(TableName='Users', Key=[1])

Drag options to blanks, or click blank then click option'

A{'UserId': {'S': '123'}}

B{'Name': {'S': '123'}}

C{'Key': {'S': '123'}}

D{'Id': {'S': '123'}}

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong attribute name for the key.

Not formatting the key value as a dictionary with type.

The key must match the primary key attribute name of the table. Here, 'Id' is the correct key attribute.

3fill in blank

hard

Fix the error in the code to correctly read a single item by its key.

DynamoDB

response = client.get_item(TableName='Users', Key={'Id': [1])

Drag options to blanks, or click blank then click option'

A{'S': '123'}

B123

C'123'

DS: '123'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the key value as a plain string without type.

Using incorrect dictionary format for the key value.

The key value must be a dictionary specifying the data type. For a string, use {'S': 'value'}.

4fill in blank

hard

Fill both blanks to correctly check if the item exists in the response.

DynamoDB

if 'Item' [1] response and response['Item'] [2] None:
    print('Item found')

Drag options to blanks, or click blank then click option'

Ain

Bis not

Cnot in

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' instead of 'is not' to check for None.

Checking for 'Item' with 'not in' which is incorrect.

Check if 'Item' is a key in the response dictionary and that its value is not None to confirm the item exists.

5fill in blank

hard

Fill all three blanks to extract the attribute 'Name' from the item safely.

DynamoDB

if 'Item' in response and response['Item'] is not None:
    name = response['Item'].get([1], [2]).get([3])
else:
    name = None

Drag options to blanks, or click blank then click option'

A'Name'

BNone

C'S'

D'Value'

Attempts:

3 left

💡 Hint

Common Mistakes

Not providing a default value in the first get, causing errors if 'Name' is missing.

Using wrong keys like 'Value' instead of 'S' for string type.

Use get('Name', None) to safely get the 'Name' attribute dictionary, then get('S') to get the string value.