# SLIDE 2

# Create a list of grades
grades = [10,20,30,40]

#print grades
print(grades)

# SLIDE 3

# Concatenate grades
grades = grades + [50,60,70]

# Print grades
print("After concatenation: " + str(grades))

#SLIDE 4

# Append to grades
grades.extend([50,60,70,70])
print("After extending the list: " + str(grades))

# Find the count, total, min, max average grade
print("Count of grades: " + str(len(grades)))

# SLIDE 5

# Print min & Max
print("Min of grades: " + str(min(grades)))
print("Max of grades: " + str(max(grades)))

# SLIDE 6

# Print total
total = 0
for item in grades:
    total += item

print("Total of grades is: " + str(total))

# SLIDE 7

# Average of grades

avg_grade = total / len(grades)
print("Average grade: " + str(round(avg_grade, 2)))

# SLIDE 8

from statistics import *
# Simple average
print("Simple average: " + str(round(mean(grades), 2)))
# Simple total
print("Simple sum is: " + str(round(sum(grades), 2)))

# SLIDE 9

superbowl_teams = ["Patriots", "Patriots", "Steelers", "Steelers", "Ravens", "Chiefs", "Packers"]

print("Superbowl Champions:")
for teams in superbowl_teams:
    print("\t" + teams)

# SLIDE 10

unique = []
dupes = []

for j in superbowl_teams:
    if j not in unique:
        unique.append(j)
    else:
        dupes.append(j)

# SLIDE 11

if len(dupes) != 0:
    print("Teams that have won multiple championships: ")

    for i in dupes:
        print(i)

# Check unique teams
if len(unique) != 0:
    print("These teams have all won a super bowl: ")

    for k in unique:
        print(k)