A fun beginner programming course for young programmers
Created by Geta Ba / GETCOM
Python stores multiple values in a list.
# EXAMPLE 31
# Create and Display Lists
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
print("Number List =", n)
print("Student List =", s)
Number List = [2, 4, 6, 8, 10]
Student List = ['Gech', 'Abebe', 'Saba']
Python can access any item in a list using its index.
# EXAMPLE 32
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
print("First Number =", n[0])
print("Last Number =", n[-1])
print("First Student =", s[0])
print("Last Student =", s[-1])
First Number = 2
Last Number = 10
First Student = Gech
Last Student = Saba
The append() function adds a new item to the end of a list.
# EXAMPLE 33
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
n.append(12)
s.append("Meron")
print("Numbers =", n)
print("Students =", s)
Numbers = [2, 4, 6, 8, 10, 12]
Students = ['Gech', 'Abebe', 'Saba', 'Meron']
The insert() function adds an item at a specific position.
# EXAMPLE 34
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
n.insert(2, 5)
s.insert(1, "Hanna")
print("Numbers =", n)
print("Students =", s)
Numbers = [2, 4, 5, 6, 8, 10]
Students = ['Gech', 'Hanna', 'Abebe', 'Saba']
The remove() function deletes an item by its value.
# EXAMPLE 35
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
n.remove(6)
s.remove("Abebe")
print("Numbers =", n)
print("Students =", s)
Numbers = [2, 4, 8, 10]
Students = ['Gech', 'Saba']
The del statement removes an item by its index.
# EXAMPLE 36
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
del n[2]
del s[1]
print("Numbers =", n)
print("Students =", s)
Numbers = [2, 4, 8, 10]
Students = ['Gech', 'Saba']
The pop() function removes and returns the last item.
# EXAMPLE 37
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
number = n.pop()
student = s.pop()
print("Removed Number =", number)
print("Removed Student =", student)
print("Numbers =", n)
print("Students =", s)
Removed Number = 10
Removed Student = Saba
Numbers = [2, 4, 6, 8]
Students = ['Gech', 'Abebe']
The len() function counts the number of items.
# EXAMPLE 38
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
print("Total Numbers =", len(n))
print("Total Students =", len(s))
Total Numbers = 5
Total Students = 3
The sort() function arranges items in ascending order.
# EXAMPLE 39
n = [10, 6, 2, 8, 4]
s = ["Saba", "Gech", "Abebe"]
n.sort()
s.sort()
print("Numbers =", n)
print("Students =", s)
Numbers = [2, 4, 6, 8, 10]
Students = ['Abebe', 'Gech', 'Saba']
The reverse() function changes the order of items.
# EXAMPLE 40
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
n.reverse()
s.reverse()
print("Numbers =", n)
print("Students =", s)
Numbers = [10, 8, 6, 4, 2]
Students = ['Saba', 'Abebe', 'Gech']
Python uses max() and min() to find the largest and smallest values.
# EXAMPLE 41
# Maximum and Minimum
n = [2, 4, 6, 8, 10]
print("Maximum =", max(n))
print("Minimum =", min(n))
Maximum = 10
Minimum = 2
The sum() function adds all numbers in a list.
# EXAMPLE 42
# Sum of List
n = [2, 4, 6, 8, 10]
total = sum(n)
print("Total Sum =", total)
Total Sum = 30
Python checks whether an item exists using the in operator.
# EXAMPLE 43
# Search Student Name
s = ["Gech", "Abebe", "Saba"]
name = input("Enter Student Name: ")
if name in s:
print("Student Found")
else:
print("Student Not Found")
Enter Student Name: Gech
Student Found ✅
The count() function counts repeated values.
# EXAMPLE 44
# Count Occurrence
n = [2, 4, 6, 4, 8, 4, 10]
number = 4
print("Count =", n.count(number))
Count = 3
The copy() function creates a new copy of a list.
# EXAMPLE 45
# Copy List
n = [2, 4, 6, 8, 10]
new_list = n.copy()
print("Original List =", n)
print("Copied List =", new_list)
Original List = [2, 4, 6, 8, 10]
Copied List = [2, 4, 6, 8, 10]
Python combines two lists using the + operator.
# EXAMPLE 46
# Combine Two Lists
n = [2, 4, 6, 8, 10]
s = ["Gech", "Abebe", "Saba"]
combined = n + s
print("Combined List:")
print(combined)
[2, 4, 6, 8, 10, 'Gech', 'Abebe', 'Saba']
Python uses a for loop to display every item in a list.
# EXAMPLE 47
# Loop Through Student List
s = ["Gech", "Abebe", "Saba"]
print("Student Names:")
for student in s:
print(student)
Student Names:
Gech
Abebe
Saba
Python stores marks in a list and calculates the average.
# EXAMPLE 48
# Student Marks
n = [2, 4, 6, 8, 10]
total = sum(n)
average = total / len(n)
print("Marks =", n)
print("Total =", total)
print("Average =", average)
Marks = [2, 4, 6, 8, 10]
Total = 30
Average = 6.0
Python checks each number and displays only even numbers.
# EXAMPLE 49
# Even Numbers
n = [2, 4, 6, 8, 10]
print("Even Numbers:")
for number in n:
if number % 2 == 0:
print(number)
Even Numbers:
2
4
6
8
10
Python uses lists to store multiple student names.
# EXAMPLE 50
# Student Registration System
s = []
while True:
print("\n1. Add Student")
print("2. Display Students")
print("3. Exit")
choice = input("Enter Choice: ")
if choice == "1":
name = input("Enter Student Name: ")
s.append(name)
print("Student Added Successfully")
elif choice == "2":
print("\nStudent List:")
for student in s:
print(student)
elif choice == "3":
print("Program Ended")
break
else:
print("Invalid Choice")
1. Add Student
2. Display Students
3. Exit
Enter Choice: 1
Enter Student Name: Gech
Student Added Successfully ✅