Validation error details in Rest API - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to raise a ValueError with a message.

Rest API

if age < 0:
    raise ValueError([1])

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

A"Age cannot be negative"

BAge cannot be negative

CValueError

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a variable without quotes causes a NameError.

Not raising an error when age is negative.

We must pass a string message to ValueError to explain the problem.

2fill in blank

medium

Complete the code to catch a ValueError exception.

Rest API

try:
    number = int(user_input)
except [1]:
    print("Invalid number")

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AValueError

BTypeError

CException

DNameError

Attempts:

3 left

💡 Hint

Common Mistakes

Catching the wrong exception type.

Using a generic Exception instead of ValueError.

ValueError is raised when int() fails to convert a string to an integer.

3fill in blank

hard

Fix the error in raising a custom exception with a message.

Rest API

class NegativeAgeError(Exception):
    pass

if age < 0:
    raise NegativeAgeError([1])

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ANegativeAgeError

BNone

C"Age must be positive"

DAge must be positive

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a bare word without quotes causes a NameError.

Not providing any message at all.

The message must be a string, so it needs quotes.

4fill in blank

hard

Fill both blanks to create a dictionary of errors with messages longer than 10 characters.

Rest API

errors = {field: msg for field, msg in error_dict.items() if len(msg) [1] [2]

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A>

B<

C10

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using < instead of > causes wrong filtering.

Using the wrong number for length comparison.

We want messages longer than 10 characters, so use > and 10.

5fill in blank

hard

Fill all three blanks to filter errors with keys starting with 'user' and messages containing 'invalid'.

Rest API

filtered = {k: v for k, v in errors.items() if k.[1]('user') and 'invalid' [2] v and len(v) [3] 0}

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Astartswith

Bin

C>

Dendswith

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'endswith' instead of 'startswith'.

Using 'not in' instead of 'in'.

Using wrong comparison operators.

We check if key starts with 'user', 'invalid' is in the message, and message length is greater than 0.