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# average1.py
#    A program to average a set of numbers
#    Illustrates counted loop with accumulator

def avg():
    n = input("How many numbers do you have? ")
    sum = 0.0
    for i in range(n):
        x = input("Enter a number >> ")
        sum = sum + x
    print "\nThe average of the numbers is", sum / n

avg()


    

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# average2.py
#    A program to average a set of numbers
#    Illustrates interactive loop with two accumulators

def avg():
    moredata = "yes"
    sum = 0.0
    count = 0
    while moredata[0] == 'y':
        x = input("Enter a number to average >> ")
        sum = sum + x
        count = count + 1
        moredata = raw_input("Do you have more numbers (yes or no)? ")
    print "\nThe average of the numbers is", sum / count

avg()


    

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# average3.py
#    A program to average a set of numbers
#    Illustrates sentinel loop using negative input as sentinel

def avg():
    sum = 0.0
    count = 0
    x = input("Enter a number (negative to quit) >> ")
    while x >= 0:
        sum = sum + x
        count = count + 1
        x = input("Enter a number (negative to quit) >> ")
    print "\nThe average of the numbers is", sum / count
avg()


    

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# average4.py
#    A program to average a set of numbers
#    Illustrates sentinel loop using empty string as sentinel

def avg():
    sum = 0.0
    count = 0
    xStr = raw_input("Enter a number (<Enter> to quit) >> ")
    while xStr != "":
        x = eval(xStr)
        sum = sum + x
        count = count + 1
        xStr = raw_input("Enter a number (<Enter> to quit) >> ")
    print "\nThe average of the numbers is", sum / count
avg()


    

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def isOdd(num):
    check = int(num) % 2
##    print check
    if check == 1:
        return 1
    if check == 0:
        return 0


def sumOdd():
    odd_count = 0
    num_list = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
    for item in num_list:
        check = isOdd(item)
        if check == 1:
            odd_count = odd_count + item
        else:
            pass
    print odd_count

sumOdd()


    

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##sumOdd 2.0 --> only sum single digit odd numbers

def isOdd(num):
    check = int(num) % 2
    if check == 1:
        return True
    if check == 0:
        return False


def sumOdd():
    odd_count = 0
    num_list = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
    for item in num_list:
        check = isOdd(item)
        if check == True and item < 10:
            odd_count = odd_count + item
        else:
            pass
    print odd_count

sumOdd()