Python

Copy a challenge in to a Python editor (IDLE or Trinket) and attempt to solve the challenge

# 1. Write a program that asks the user for a number, and then calculates its square using

# the formula: square = number * number

# 2. Write a program that asks the user for a number, and then calculates its cube using the

# formula: cube = number * number * number.

# 3. Write a program that takes in two numbers, multiplies them and displays the result

# 4. Write a program that takes in three numbers, adds them together

# and then displays their sum.

# 5. Write a program that takes in two numbers, divides them and displays the result.

# 6. Write a program that asks the user for the radius of a circle, and then calculates its circumference using the formula: circumference = 2 * pi * radius.

# 7. Write a program that takes in two numbers, divides them

# and displays the integer and remainder results. e.g. 7 / 3 = 2 r 1.

# 8. Write a program that takes in the user's name and then displays a

# message to that person. e.g. "Hello, Mikey".

# 9. Write a program that takes in the two seperate names and then displays both names and

# says they are friends.

# 10. Write a program that takes in a number, and then displays the times table for that

# number. e.g. 7 is input. 7, 14, 21, 28, 35, 42, 49, 56, 63, 70 is output.

# 11. Write a python program that calculates the area and perimeter of a rectangle.

# 12. Write a program that asks the user for a temperature in Celsius, and then converts it to

# Fahrenheit using the formula: F = (C * 1.8) + 32.

# 13. You have found a summer job in a local farm picking apples. You are paid in two ways,

# by weight and by time. You are paid £0.50 for every kilogram picked and £8.50 for every

# hour worked. Enter the weight and hours worked along with a calculation for each wage.

# Display both earnings and declare the actual earnings.

# 14. You work at Zara. You earn 12.45 per hour. You also earn 2% commission on top of your

# pay based on sales that day. Write a program that takes in the number of hours you worked,

# and the value of items sold. It must calculate and display your wage, commission and

# total pay.

# 15. Write a program that helps the user to add up the coins in their piggy bank.

# The program should ask: “How many pennies”, “How many two pences”, “How many 5

# pences” etc. Then it should give the total value of the piggy bank.

# 16. Write a program that takes in a number and displays whether it is a positive

# or a negative number.

# 17. Write a program that takes in two numbers and displays the bigger one.

# 18. Write a program that takes in a number and displays whether it is an odd

# or an even number.

# 19. Write a program that takes in a person's age and then displays whether they

# are allowed to buy alcohol or not.

# 20. Write a python program that asks the user for their age and determines if they are old

# enough to vote.

# 21. Write a program that takes in a person's age and then displays whether they

# are allowed to watch a 12, 15 or 18 certificat movie.

# 22. Write a program that takes in a student mark out of 100 and then displays the

# grade that student would get. You can research "GCSE Computer Science grade boudaries"

# to get some real context for these boundaries.

# 23. Write a program that asks a user to enter a number. If the number is between 0 and

# 10, write the word blue. If the number is between 10 and 20, write the word red.

# If the number is between 20 and 30, write the word green. If it is any other number,

# write that it is not a correct colour option.

# 24. Write a program that that performs the following: gets the temperature of a bath.

# If the bath is 39 or hotter, display “Too hot”. If the bath is 28 or lower, display

# “too cold”. Otherwise, show “Just right”.

# 25. Write a program that takes two user inputs, the cost of a product and the sales price.

# The program should output whether that product is making a profit or a loss, and display

# how much by.

# 26. ASOS is having a sale. They will offer a 20% discount when users spend more than £100

# and they get free delivery if they spend over £50 (postage usually costs £4). Write a

# program that takes the ammount of money a user is spending, and then display the total

# for that user to pay.

# 27. Write a program that takes in a persons name and the year they were born, and

# then prints only the first 3 characters of their name followed by the two digit year they

# were born. e.g. Mikey Skilton, 1990 will turn into -> Mik90 

# 28. Write a program that displays numbers 1 to 10 (use a for loop).

# 29. Write a program that displays numbers 100 down to 0 (use a for loop).

# 30. Write a program that displays all even numbers up to 100 (use a for loop).

# 31. Write a program that shows the 7 times table (use a for loop). e.g. 7, 14, 21...

# 32. Write a program that takes in a number and displays it's times table up to 12.

# Each times table on the output should look pretty, e.g. 7 x 5 = 35  (use a for loop)

# 33. Use this list of data:

# names = ["Moanna", "Rapunzel", "Cinderella", "Prince Charming", "Beast"]

# Write a program that prints each of these names out one above the other (use a for loop).

# 34. Use this list of data:

# primes = [2,3,5,7,11,13,17,19]

# Write a program that prints the double of each of these numbers (use a for loop).

# 35. Use this string:

# word = supercalifragilisticexpialidocious

# Write a program that prints ONLY the vowels of this word. e.g a,e,i,o,u (use a for loop)

# 36. Make a shopping list program that enables users to enter items repeately until

# they enter "stop". The program will then print out all of their items (use a for loop).

# 37. You are making posters of times tables to go around a primary school classroom.

# Write a program that displays all times tables from 1 to 12 for all numbers from 1 to 12.

# Seperate each distinct number with a line break (use a for loop).

# 38. Write a program that enables users input their password to access a system. The users get only 3

# attempts and then they are locked out. The actual password is "password123" (use a for loop).

# 39. Write a program that displays numbers 1 to 10 (use a while loop).

# 40. Write a program that displays numbers 100 down to 0 (use a while loop).

# 41. Write a program that displays all even numbers up to 100 (use a while loop).

# 42. Write a program that shows the 7 times table (use a while loop).

# 43. Write a program that asks the user to enter a password, and keeps asking until the correct password is entered.

# 44. Write a program that asks the user for a number and then prints all the numbers up to that number using a while loop.

# 45. Write a program that asks the user to guess a number between 1 and 100, and keeps asking until the correct number is guessed.

# 46. Write a program that asks the user for a string and then prints each character of the string on a new line using a while loop.

# 47. Write a program that asks the user for a list of numbers and then calculates the sum of those numbers using a while loop.

# 48. Write a program that prints the first 10 odd numbers using a while loop.

# 49. Write a program that asks the user for a list of numbers and then calculates the product of those numbers using a while loop.

# 50. Write a program that asks the user for a list of names and then prints each name with a greeting message using a while loop.

# 51. Write a program that asks the user for a number and then calculates the factorial of that number using a while loop.

# 52. Write a program that asks the user to enter a sequence of numbers and then calculates the average of those numbers using a while loop.

# 53. Write a program that creates a list of numbers from 1 to 10, and then prints each number on a new line.

# 54. Write a program that asks the user to enter a list of numbers, and then prints the largest number in the list.

# 55. Write a program that asks the user to enter a list of names, and then prints the number of names that start with the letter "A".

# 56. Write a program that asks the user to enter a list of numbers, and then prints the sum of all the even numbers in the list.

# 57. Write a program that creates a list of 10 random numbers, and then prints the list in ascending order.

# 58. Write a program that creates a list of 5 words, and then prints each word in reverse order.

# 59. Write a program that asks the user to enter a list of words, and then prints the list in alphabetical order.

# 60. Write a program that asks the user to enter a list of numbers, and then removes all the even numbers from the list.

# 61. Write a program that creates a list of 10 random numbers, and then prints the second largest number in the list.

# 62. Write a program that asks the user to enter a list of numbers, and then calculates the average of the numbers in the list.

# 63. Write a program that asks the user for two numbers, and then uses a procedure to add the numbers together and print the result.

# 64. Write a program that asks the user for a list of numbers, and then uses a procedure to calculate the sum of the numbers and print the result.

# 65. Write a program that asks the user for a string, and then uses a procedure to print the string in reverse order.

# 66. Write a program that asks the user for a list of numbers, and then uses a procedure to print only the even numbers in the list.

# 67. Write a program that asks the user for a list of names, and then uses a procedure to print a greeting message for each name.

# 68. Write a program that asks the user for a list of numbers, and then uses a function to return and print the numbers in reverse order.

# 69. Write a program that asks the user for a number, and then uses a function to return and print the multiplication table for that number.

# 70. Write a program that asks the user for a list of words, and then uses a function to return and print only the words that contain the letter "a".

# 71. Write a program that asks the user for a list of numbers, and then uses a function to return the product of the numbers and print the result.

# 72. Write a program that asks the user for a list of names, and then uses a function to return and print only the names that start with the letter "A".

# 73. Write a program that reads a text file and prints its contents to the console.

# 74. Write a program that reads a list of numbers from a text file, calculates the average of the numbers, and writes the result to another text file.

# 75. Write a program that reads a list of words from a text file, sorts the words in alphabetical order, and writes the sorted words to another text file.

# 76. Write a program that reads a list of numbers from a text file, removes any duplicates in the list, and writes the unique numbers to another text file.

# 77. Write a program that reads a list of names from a text file, capitalizes the first letter of each name, and writes the capitalized names to another text file.

# 78. Write a program that reads a list of words from a text file, counts the number of occurrences of each word, and writes the results to another text file.

# 79. Write a program that reads a list of numbers from a text file, finds the smallest number in the list, and writes the result to another text file.

# 80. Write a program that reads a list of names from a text file, removes any names that start with the letter "A", and writes the remaining names to another text file.

# 81. Write a program that reads a text file, replaces all occurrences of a specified word with another word, and writes the updated text to another text file.

# 82. Write a program that reads a list of numbers from a text file, calculates the sum of the numbers, and writes the result to another text file.