Intro to Programming with Python - Tutorial 6 - Exercise 1

This is the solution to the exercise for the Intro to Programming with Python 6th tutorial covering lists.

The tutorial can be found here
https://youtu.be/2hdob7gw7r8

Exercise Description:
The exercise is to build a program that will do the following:
1 - Prompt the user to enter his/her four course names
2 - Print the course list back to the user
3 - Ask the user if they wish to change one of the courses (Yes, No)
4 - If they answer 'Yes':
    4.1 - Ask user which course number they wish to change (1,2,3,4)
    4.2 - Prompt the user to enter the new course name
    4.3 - Print the new course list to the user
5 - If they answer 'No':
    5.1 - Tell the user their course list did not change

Here is a sample output when you run the program you will create:

Bonus:
- Accept Y, Yes, yes, No, no, N
- Check if user entered less than 1 or more than 4 and if they did tell them they should enter only numbers from 1 to 4

Here is a sample output when you run the bonus version of the program:

Here is the solution to the exercise:

	# Remember lines starting with pound sign are comments
	# First prompt the user to enter his/her four courses
	c1 = input('Enter your first course: ')
	c2 = input('Enter your second course: ')
	c3 = input('Enter your third course: ')
	c4 = input('Enter your forth course: ')
	# Now create the list out of the four courses
	courses = [c1, c2, c3, c4]
	# Print the course list.
	print ('Your course list is: ', courses)
	# Ask the user if he/she wishes to change one of the courses
	changeCourse = input('Do you wish to change one of your courses(Yes/No)? ')
	# If user answers yes check which course
	if changeCourse == 'Yes':
	courseNumber = int(input('Which course do you want to change (1,2,3,4)? '))
	# Remember, we asked user to enter 1 to 4 so we have to subtract one
	index = courseNumber -1
	newCourse = input('Enter the new course name you wish to take: ')
	courses[index] = newCourse
	print('Your new course list is: ', courses)
	else:
	print('Your course list did not change')

view raw IntroPython_Tut06_Excercise1.py hosted with ❤ by GitHub

And here is the solution including the bonus checks:

	# Remember lines starting with pound sign are comments
	# First prompt the user to enter his/her four courses
	c1 = input('Enter your first course: ')
	c2 = input('Enter your second course: ')
	c3 = input('Enter your third course: ')
	c4 = input('Enter your forth course: ')
	# Now create the list out of the four courses
	courses = [c1, c2, c3, c4]
	# Print the course list.
	print ('Your course list is: ', courses)
	# Ask the user if he/she wishes to change one of the courses
	changeCourse = input('Do you wish to change one of your courses(Yes/No)? ')
	# If user answers yes check which course
	# Remember a string is a sequence so we can go changeCourse[0] to check first letter
	# so we check first character if it is a y in any case or a 1
	if changeCourse[0].upper() == 'Y' or changeCourse == '1':
	courseNumber = int(input('Which course do you want to change (1,2,3,4)? '))
	# We can have if blocks within if blocks
	# Check if user entered something less than 1 or more than 4
	if courseNumber < 1 or courseNumber > 4:
	print('Sorry but you must enter a number between 1 and 4')
	else:
	# Remember, we asked user to enter 1 to 4 so we have to subtract one
	index = courseNumber -1
	newCourse = input('Enter the new course name you wish to take: ')
	courses[index] = newCourse
	print('Your new course list is: ', courses)
	else:
	print('Your course list did not change')

view raw IntroPython_Tut06_Excercise_2.py hosted with ❤ by GitHub

Intro to programming with Python - Tutorial 5, Exercise 1

This is the solution to the simple calculator exercise in the fifth tutorial in the introduction to programming with Python series.
The tutorial can be found here:
https://www.youtube.com/watch?v=-I1QcEA8a7A

For this exercise you have to write a python program that will prompt the user for an operation (add, subtract, multiply, divide) then prompt the user for two numbers and perform the operation on them and display the result to the user.

Here is a sample output when you run your calculator python program (call it calc.py):

The program itself should be simple enough. You can copy this code into a python file (calc.py) and execute it.
Please note that in python lines that start with the pound sign are comment lines.
Comment lines give information about the code but do not affect how it executes. Python will ignore them.

	# First, prompt the user for the operation he/she wishes to execute
	op = input('What operation do you wish to execute?(add, subtract, multiply, divide): ')
	# Now prompt the user for the two numbers to execute the operation on
	num1 = int(input('Enter first number: '))
	num2 = int(input('Enter second number: '))
	# Use if/elif to execute the desired operation
	if op == 'add':
	print('Your result is: ', num1 + num2)
	elif op == 'subtract':
	print('Your result is: ', num1 - num2)
	elif op == 'multiply':
	print('Your result is: ', num1 * num2)
	elif op == 'divide':
	print('Your result is: ', num1 / num2)
	else:
	# It seems the user entered an operation other than the supported ones. Give error message.
	print('Sorry, I do not recognize this operation')

view raw calc.py hosted with ❤ by GitHub