topScorersChart-01

import matplotlib.pyplot as plot
import random

def makeScoreList(numItems): # Make a random list of numbers each having a
    scores = []              #  value between 0 and 10
    for x in range (numItems):
        scores.append(random.randint(0, 10))
    return scores

def count (scoreVal, scoreList): # For a particular value calculate and return
    numScore = 0                 #  the number of occurances of that value.
    for item in scoreList:
        if item == scoreVal:
            numScore += 1
    return numScore

def scoreStats(scoreValues): # Put the number of value occurances in a list and return the list.
    makeStatList=[]
    for i in range (11):
        makeStatList.append(count(i, scoreValues))
    print()
    return makeStatList

def statList(): # Descriptive list of the quantity of each value.
    for item in range(len(scoreStatList)):
        print ("Number of ",item,"'s"," = ",(scoreStatList[item]),sep="")


###################-MAIN PYTHON PROGRAM LOOP- ##########################

# List variable containing the output from the makeScoreList function.
scoreValueList = makeScoreList(30)
# List variable containing the quantity of each grade value.
scoreStatList = scoreStats(scoreValueList)

# These print line allow checking the output values of the various lists.
#print("A random, unordered list of values (0-10) representing student scores.\n", scoreValueList)
#print()
#print("The number of times each value occurs.\n", scoreStatList)
print()
print("A descriptive breakout of the value quantities.\n")
statList()


performance = scoreStatList # The list created by the topScorers-02 program.

plot.bar(range(11), performance, align='center', alpha=0.5)

plot.xticks(range(11))
plot.ylabel('Score frequency')
plot.title('Scores on a quiz')

plot.show()
plot.savefig(fname="Quiz Chart.png")