PCEP (Python Institute) problems

203 problems for PCEP (Python Institute) practice, in Python Programming, each with a worked solution. Try each one on paper first, then check your answer.

All SubjectsPhysicsChemistryMathematicsBiologyPython ProgrammingStatistics & Data Science

All LevelsMiddle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneral

Pick a subject to see its topics.

AllEasyMediumHard

SortMixedNewest firstOldest firstA to Z197 problems

Type:AnyConceptualNumericalPython-Coded

1.

This function should give the average of a list, but gives a wrong answer for [2, 4, 6] (it gives…

High School (11–12), High School (9–10), Undergraduate, General · Testing and DebuggingBoard Exam, AP, A-Level, IB, PCEP (Python Institute)StemPy Lab

Easy

2.

Write a function above_mean(marks) for a dictionary of name and mark.

High School (9–10), High School (11–12), Undergraduate, General · Essentials Projects, Dictionaries, Errors and Exceptions, Text ProcessingBoard Exam, PCEP (Python Institute)StemPy Lab

Medium

3.

Write three small functions square(n), double(n) and negate(n), and a dictionary operations that…

High School (9–10), High School (11–12), Undergraduate, General · Essentials Projects, Dictionaries, Errors and Exceptions, Text ProcessingBoard Exam, PCEP (Python Institute)StemPy Lab

Medium

4.

Write a recursive function all_positive(items) that gives True if every item of the list is more…

High School (9–10), High School (11–12), Undergraduate, General · RecursionA-Level, IB, PCEP (Python Institute)StemPy Lab

Medium

5.

For sum_to(3), where sum_to(n) is 0 for n == 0 and n + sum_to(n - 1) otherwise, write the calls…

High School (9–10), High School (11–12), Undergraduate, General · RecursionA-Level, IB, PCEP (Python Institute)StemPy Lab

Medium

6.

What do show_up(3) and show_down(3) print? Say it before you run it.

High School (9–10), High School (11–12), Undergraduate, General · RecursionA-Level, IB, PCEP (Python Institute)StemPy Lab

Easy

7.

The marks, already sorted from the highest, are [95, 90, 90, 90, 80, 75, 75].

High School (9–10), High School (11–12), Undergraduate, General · Searching and SortingBoard Exam, AP, PCEP (Python Institute)StemPy Lab

Medium

8.

Write a function first_above(items, limit) that gives the position of the first item that is more…

High School (9–10), High School (11–12), Undergraduate, General · Searching and SortingBoard Exam, AP, A-Level, IB, PCEP (Python Institute)StemPy Lab

Easy

9.

Say which error each line gives, before you run it.

High School (9–10), High School (11–12), Undergraduate, General · Errors and ExceptionsBoard Exam, PCEP (Python Institute)StemPy Lab

Easy

10.

The data reader of the lesson reports each bad line with a message.

High School (9–10), High School (11–12), Undergraduate, General · Errors and ExceptionsBoard Exam, PCEP (Python Institute)StemPy Lab

Medium

11.

For each job, say whether you would look before you leap (an if) or try and catch (try and except)…

High School (9–10), High School (11–12), Undergraduate, General · Errors and ExceptionsBoard Exam, PCEP (Python Institute)StemPy Lab

Easy

12.

Write a program that swaps the values of two variables a and b in one line, without a third…

High School (9–10), High School (11–12), Undergraduate, General · Tuples and SetsBoard Exam, PCEP (Python Institute)StemPy Lab

Easy

13.

Group these words by their length, in a dictionary where the key is the length and the value is the…

High School (9–10), High School (11–12), Undergraduate, General · DictionariesBoard Exam, PCEP (Python Institute)StemPy Lab

Medium

14.

For this dictionary, write the expression for each answer.

High School (9–10), High School (11–12), Undergraduate, General · DictionariesBoard Exam, PCEP (Python Institute)StemPy Lab

Medium

15.

Write a program that counts how many times each letter appears in the word mississippi, and shows…

High School (9–10), High School (11–12), Undergraduate, General · DictionariesBoard Exam, PCEP (Python Institute)StemPy Lab

Easy

16.

Say whether a list or a dictionary is the better choice for each, and why.

High School (9–10), High School (11–12), Undergraduate, General · DictionariesBoard Exam, PCEP (Python Institute)StemPy Lab

Easy

17.

This program should show the average of the even numbers in the list.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Mini ProjectsPCEP (Python Institute)StemPy Lab

Medium

18.

The marks are [72, 85, 64, 90, 58, 91, 60, 74].

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Mini ProjectsPCEP (Python Institute)StemPy Lab

Medium

19.

A quiz has 5 questions but only 4 answers.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Mini ProjectsPCEP (Python Institute)StemPy Lab

Easy

20.

The secret number is 42, the limit is 7 tries, and the player types 50, 30, 36, 42.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Mini ProjectsPCEP (Python Institute)StemPy Lab

Medium

21.

Same name, two variables

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · FunctionsPCEP (Python Institute)StemPy Lab

Medium

22.

This program should show The total is 50. It stops with an error. Find the fault and fix it.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · FunctionsPCEP (Python Institute)StemPy Lab

Medium

23.

Which of these four programs shows something? Say it before you run each one.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · FunctionsPCEP (Python Institute)StemPy Lab

Easy

24.

Here is a table of marks: one row for each student, and one column for each test.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · ListsPCEP (Python Institute)StemPy Lab

Medium

25.

What do a and b show at the end? Say it before you run it.

Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · ListsPCEP (Python Institute)StemPy Lab

Medium