MessagePack for compact binary in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the MessagePack library in Python.

IOT Protocols

import [1]

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Amsgpack

Bmessagepack

Cmsgpack-python

Dmpack

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'messagepack' instead of 'msgpack' causes import errors.

Trying to import 'mpack' which is not a valid package.

The correct library name to import MessagePack in Python is msgpack.

2fill in blank

medium

Complete the code to pack a Python dictionary into MessagePack format.

IOT Protocols

packed = msgpack.[1]({'key': 'value'})

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Aunpackb

Bdumpb

Cserialize

Dpackb

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'unpackb' which is for unpacking, not packing.

Using 'serialize' which is not a valid function in msgpack.

The packb function converts Python objects into MessagePack binary format.

3fill in blank

hard

Fix the error in unpacking MessagePack data back to Python object.

IOT Protocols

data = msgpack.[1](packed_data, raw=False)

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Aloadb

Bunpackb

Cpackb

Ddeserialize

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'packb' which is for packing, not unpacking.

Using 'loadb' which is not a valid function in msgpack.

The unpackb function is used to convert MessagePack binary data back to Python objects.

4fill in blank

hard

Fill both blanks to create a MessagePack packed object and then unpack it correctly.

IOT Protocols

packed = msgpack.[1](obj)
data = msgpack.[2](packed, raw=False)

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Apackb

Bunpackb

Cloadb

Ddumpb

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up packing and unpacking functions.

Using 'loadb' which is not part of msgpack.

Use packb to pack and unpackb to unpack MessagePack data.

5fill in blank

hard

Fill all three blanks to pack a dictionary, unpack it, and access the value of key 'name'.

IOT Protocols

packed = msgpack.[1]({'name': 'Alice'})
data = msgpack.[2](packed, raw=False)
value = data[[3]]

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Apackb

Bunpackb

C'name'

D'key'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong function names for packing or unpacking.

Using incorrect key string to access dictionary value.

First pack with packb, then unpack with unpackb, and access the dictionary value with the key 'name'.