A school timetable is displayed as a 2D table consisting of 5 rows (for each day of the week) and 5 columns (number of lessons in a day).
Such a table can be stored in a computer program using a 2-dimensional array (2d Array). In python, this is done by creating a list of lists.
Each value of a 2D array can then be accessed by proving two indices: the row number and the column number as displayed on the picture below:
Python Challenges
The following 3 tabs contain 3 different challenges, all based on accessing information from the 2D array called timetable.
What Lesson?Today's Lessons?How Many Lessons?
Write a program that:
- Asks the user to input a day of the week (e.g. Tuesday)
- Asks the user to input a period of the day (between 1 and 5) (e.g. 2)
- Retrieves and outputs the lesson on that day and period (e.g. Spanish)
Write a program that:
- Asks the user to input a day of the week (e.g. Tuesday)
- Displays all five lessons for that day
Write a program that:
- Asks the user to input a subject (e.g. Maths)
- Counts and outputs the number of lessons for that subject throughout the week. (e.g. “You have 3 Maths lesson this week.”)
Python Code
Use the following code to complete all three challenges mentioned above:
Help?
The following lines of code will help you solve each of the three challenges.
What Lesson?Today's Lessons?How Many Lessons?
#INPUT
day = input("Day of the week?").title()
period = int(input("Lesson number (1 to 5):"))
while period<1 or period>5:
period = int(input("Lesson number (1 to 5):"))
#PROCESS
lesson=""
if day=="Monday":
lesson = timetable[0][period-1]
elif day=="Tuesday":
lesson = timetable[1][period-1]
elif day=="Wednesday":
lesson = timetable[2][period-1]
elif day=="Thursday":
lesson = timetable[3][period-1]
elif day=="Friday":
lesson = timetable[4][period-1]
else:
print("Not a valid week day!")
#OUTPUT
if lesson!="":
print("On " + day + ", lesson " + str(period) + " you have " + lesson + ".")
#INPUT
day = input("Day of the week?").title()
#PROCESS
lessons=[]
if day=="Monday":
lessons = timetable[0]
elif day=="Tuesday":
lessons = timetable[1]
elif day=="Wednesday":
lessons = timetable[2]
elif day=="Thursday":
lessons = timetable[3]
elif day=="Friday":
lessons = timetable[4]
else:
print("Not a valid week day!")
#OUTPUT
print("Your lessons on this day:")
for lesson in lessons:
print(lesson)
#INPUT
subject= input("Enter Subject:")
#PROCESS
count=0
for day in range(0,5):
for period in range(0,5):
if timetable[day][period] == subject:
count+=1
#OUTPUT
if count>1:
print("You have " + str(count) + " " + subject + " lessons per week.")
else:
print("You have " + str(count) + " " + subject + " lesson per week.")
Extension Task
Create three different functions for each of the three challenges and add a menu structure to your code to let the user decide what information to retrieve from their timetable.
Solution...
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