Reaction time game in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the module needed to measure time.

Raspberry Pi

import [1]

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

Atime

Brandom

Cgpiozero

Dsys

Attempts:

3 left

💡 Hint

Common Mistakes

Importing the wrong module like random or gpiozero instead of time.

The time module lets us measure time intervals, which is important for a reaction time game.

2fill in blank

medium

Complete the code to wait for a random time between 1 and 3 seconds before starting the reaction timer.

Raspberry Pi

import random
import time

wait_time = random.[1](1, 3)
time.sleep(wait_time)

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

Achoice

Buniform

Crandom

Drandint

Attempts:

3 left

💡 Hint

Common Mistakes

Using random.choice which picks from a list, not a range.

Using random.uniform which picks a float, not an integer.

random.randint(1, 3) picks a whole number between 1 and 3 seconds to wait.

3fill in blank

hard

Fix the error in the code that measures the reaction time by capturing start and end times.

Raspberry Pi

start = time.[1]()
# wait for user input here
end = time.perf_counter()
reaction_time = end - start

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Asleep

Btime

Cperf_counter

Dprocess_time

Attempts:

3 left

💡 Hint

Common Mistakes

Using time.sleep which pauses the program.

Using time.time which is less precise for short intervals.

time.perf_counter() gives a precise timer for measuring short durations like reaction time.

4fill in blank

hard

Fill both blanks to create a dictionary that stores reaction times for each player if their time is less than 2 seconds.

Raspberry Pi

reaction_times = {player: [1] for player, [2] in results.items() if [1] < 2}

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Atime

Bscore

Creaction

Dresult

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same variable name for player and time.

Using undefined variable names.

The dictionary comprehension uses time as the value and time as the variable for the reaction time in the loop.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that stores uppercase player names as keys and their scores if scores are above 0.

Raspberry Pi

high_scores = { [1]: [2] for [3], [2] in scores.items() if [2] > 0}

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

Aplayer.upper()

Bscore

Cplayer

Dpoints

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up variable names or using undefined variables.

Not using the upper() method for keys.

The keys are uppercase player names using player.upper(), values are score, and the loop variables are player and score.