Python - Standard Library Usage
You want to generate a dictionary where keys are numbers from 1 to 5 and values are random integers between 10 and 20. Which code correctly does this?
You want to generate a dictionary where keys are numbers from 1 to 5 and values are random integers between 10 and 20. Which code correctly does this?
hard🚀 Application Q15 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand dictionary comprehension syntax
We want keys as numbers 1 to 5 and values as random integers between 10 and 20. The syntax is {key: value for key in iterable}.Step 2: Check each option
import random result = {i: random.randint(10, 20) for i in range(1, 6)} correctly usesias key andrandom.randint(10, 20)as value for each i in 1 to 5.
import random result = {random.randint(10, 20): i for i in range(1, 6)} swaps keys and values incorrectly.
import random result = {i: random.choice(range(10, 20)) for i in range(1, 6)} usesrandom.choice(range(10, 20))which produces integers 10-19 excluding 20, unlike randint(10,20).
import random result = dict(random.randint(10, 20) for i in range(1, 6)) tries to convert a generator of integers to dict, which causes an error.Final Answer:
import random result = {i: random.randint(10, 20) for i in range(1, 6)} -> Option AQuick Check:
Correct dict comprehension with randint [OK]
Quick Trick: Use dict comprehension with randint for random values [OK]
Common Mistakes:
MISTAKES- Swapping keys and values
- Using dict() on generator of ints
- Using choice with range(10,20) excludes 20
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