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Python Practice Exercises

Learning is an ongoing process

We are never fully trained and should therefore constantly challenge ourselves with old/new and simple/difficult tasks. Therefore I am starting this repository to improve my Python skills.

The exercises were taken from:

Exercises

Exercise 1: Character Input (difficulty: 🍑)

Create a program that asks the user to enter their name and their age. Print out a message addressed to them that tells them the year that they will turn 100 years old.

Extras:

  1. Add on to the previous program by asking the user for another number and printing out that many copies of the previous message. (Hint: order of operations exists in Python)
  2. Print out that many copies of the previous message on separate lines. (Hint: the string "\n is the same as pressing the ENTER button)

Exercise 2: Odd Or Even (difficulty: 🍑)

Ask the user for a number. Depending on whether the number is even or odd, print out an appropriate message to the user. Hint: how does an even / odd number react differently when divided by 2?

Extras:

  1. If the number is a multiple of 4, print out a different message.
  2. Ask the user for two numbers: one number to check (call it num) and one number to divide by (check). If check divides evenly into num, tell that to the user. If not, print a different appropriate message.

Exercise 3: List Less Than Ten (difficulty: 🍑🍑)

Take a list, say for example this one: a = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89] and write a program that prints out all the elements of the list that are less than 5.

Extras:

  1. Instead of printing the elements one by one, make a new list that has all the elements less than 5 from this list in it and print out this new list.
  2. Write this in one line of Python.
  3. Ask the user for a number and return a list that contains only elements from the original list a that are smaller than that number given by the user.

Exercise 4: Divisors (difficulty: 🍑🍑)

Create a program that asks the user for a number and then prints out a list of all the divisors of that number. (If you don’t know what a divisor is, it is a number that divides evenly into another number. For example, 13 is a divisor of 26 because 26 / 13 has no remainder.)

Exercise 5: List Overlap (difficulty: 🍑🍑)

Take two lists, say for example these two:
a = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89]
b = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
and write a program that returns a list that contains only the elements that are common between the lists (without duplicates). Make sure your program works on two lists of different sizes.

Extras:

  1. Randomly generate two lists to test this
  2. Write this in one line of Python (don’t worry if you can’t figure this out at this point - we’ll get to it soon)

Exercise 6: String Lists (difficulty: 🍑🍑)

Ask the user for a string and print out whether this string is a palindrome or not. (A palindrome is a string that reads the same forwards and backwards.)

Exercise 7: List Comprehensions (difficulty: 🍑🍑)

Let’s say I give you a list saved in a variable: a = [1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
Write one line of Python that takes this list a and makes a new list that has only the even elements of this list in it.

Exercise 8: Rock Paper Scissors (difficulty: 🍑🍑🍑)

Make a two-player Rock-Paper-Scissors game. (Hint: Ask for player plays (using input), compare them, print out a message of congratulations to the winner, and ask if the players want to start a new game)

Remember the rules:

  • Rock beats scissors
  • Scissors beats paper
  • Paper beats rock

Exercise 9: Guessing Game One (difficulty: 🍑🍑🍑)

Generate a random number between 1 and 9 (including 1 and 9). Ask the user to guess the number, then tell them whether they guessed too low, too high, or exactly right. (Hint: remember to use the user input lessons from the very first exercise)

Extras:

  1. Keep the game going until the user types “exit”
  2. Keep track of how many guesses the user has taken, and when the game ends, print this out.