You want to check if a list items contains exactly 3 elements using pytest assert. Which is the best assert statement?

hard🚀 Application Q15 of 15

PyTest - Writing Assertions

You want to check if a list items contains exactly 3 elements using pytest assert. Which is the best assert statement?

Aassert len(items) == 3, "List does not have 3 elements"

Bassert items == 3, "List length check failed"

Cassert items.length == 3, "Wrong length"

Dassert len(items) = 3, "Length must be 3"

Step-by-Step Solution

Solution:

Step 1: Understand how to get list length in Python
Use the built-in function len() to get the number of elements in a list.
Step 2: Check correct assert syntax for length comparison
Compare len(items) with 3 using '==', and provide a clear message after a comma.
Final Answer:
assert len(items) == 3, "List does not have 3 elements" -> Option A
Quick Check:
len(list) == number [OK]

Quick Trick: Use len() and '==' to check list size [OK]

Common Mistakes:

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