1. average2.py
2. average2_withmain.py
3. average2_withtesting.py
4. our_favorite_expression.py
5. test.py
6. testSumEvens.py

# Program to find the average of two numbers
# by Sara Sprenkle

def average2(num1, num2):
    """
    Parameters: two numbers to be averaged
    Returns the average of two numbers
    """
    average = (num1 + num2)/2
    return average
    
print("This program will find the average of two numbers.")
print()

num1 = eval(input("Enter the first number: " ))
num2 = eval(input("Enter the second number: "))

# calculate the average of the two numbers
average = average2(num1, num2)

print("The average of", num1, "and", num2, "is", average)

# Program to find the average of two numbers.
# Demonstrates using a main function.
# by Sara Sprenkle

def main():
    print("This program will find the average of two numbers.")
    print()
    
    num1 = eval(input("Enter the first number: " ))
    num2 = eval(input("Enter the second number: "))
    
    # calculate the average of the two numbers
    average = average2(num1, num2)
    
    print("The average of", num1, "and", num2, "is", average)

def average2(num1, num2):
    """
    Parameters: two numbers to be averaged
    Returns the average of two numbers
    """
    average = (num1 + num2)/2
    return average
    
main()

# Program to find the average of two numbers.
# Demonstrates using a main function.
# by Sara Sprenkle

import test

def main():
    print("This program will find the average of two numbers.")
    print()
    
    num1 = eval(input("Enter the first number: " ))
    num2 = eval(input("Enter the second number: "))
    
    # calculate the average of the two numbers
    average = average2(num1, num2)
    
    print("The average of", num1, "and", num2, "is", average)

def average2(num1, num2):
    """
    Parameters: two numbers to be averaged
    Returns the average of two numbers
    """
    average = (num1 + num2)/2
    return average
   
def testAverage2():
    """
    Test the average2 function with good test cases.
    """
    # here is where the tests go:

 
testAverage2()
#main()

# Program computes the answer to our favorite expression: i² + 3j - 5
# By CSCI111

import test

print("This program calculates the result of the expression i^2 + 3j - 5")

#user_i = float(input("Enter i:"))
#user_j = float(input("Enter j"))


def calculateFavoriteExpression(i, j):
    """
    """
    result = i**2 + 3*j -5
    return result
    
    # alternatively:
    # return i**2 + 3*j -5
    

test.testEqual( calculateFavoriteExpression(7, 2), 50)
test.testEqual( calculateFavoriteExpression(0, 0), -5)
test.testEqual( calculateFavoriteExpression(1, .333), -3.001)

def testEqual(actual,expected,places=5):
    '''
    Does the actual value equal the expected value?
    For floats, places indicates how many places, right of the decimal, must be correct
    '''
    if isinstance(expected,float):
        if abs(actual-expected) < 10**(-places):
            print('\tPass')
            return True
    else:
        if actual == expected:
            print('\tPass')
            return True
    print('\tTest Failed: expected {} but got {}'.format(expected,actual))
    return False

# Demonstrate testing sumEvens function
# by CSCI111

import test

def main():
    x = 10
    sum = sumEvens( x )
    print("The sum of even #s up to", x, "is", sum)

def testSumEvens():
    """
    A function to test that the sumEvens function works as expected.
    If it does, the function will display "Pass" for each of the test cases.
    """
    actual = sumEvens(10)
    expected = 20
    test.testEqual( actual, expected )
    # same test: 
    test.testEqual( sumEvens( 10 ), 20)
    
    # what are other good tests?

    # this one will not pass -- just to show you what happens if a test case fails.
    # You want all of your test cases to be accurate tests and to pass.
    #test.testEqual( sumEvens( 10 ), 19)

def sumEvens(limit):
    """    
    limit: a positive integer
    Sums the even numbers from 0 up to but not including limit
    Return that sum.
    """
    
    """
    Returns the sum of even numbers from 0 up to but not including 
    limit (a positive integer)
    """
    
    """
    Precondition: limit is a postive integer
    Postcondition: returns the sum of even numbers from 0 up to but not including 
    limit (a positive integer)
    """
    
    total = 0
    for x in range(0, limit, 2):
        total += x	
    return total

testSumEvens() # I just want to test the function to make sure it works.
#main()