lucpet

# 1. Write a function that takes two number parameters and 
#    returns their product
def mult_me(x, y):
    z = x * y
    return z

mult_me(123, -2)
#-----------------------------------------------------------
# 2. Write a function that takes two string parameters and 
#    returns a string that is a concatenation of the second 

lucpet

# 3. Following the function design recipe, define a function that has one
#    parameter, a number, and returns that number tripled.
def recipie(x):
    """ (number) -> number

    Following the function design recipe, define a function that has one
    parameter, a number, and returns that number tripled.
    """
    return x * 3

lucpet

import math

def poly_area(n_sides, side_len):
    ''' (number, number) -> number
    
    Calculates the area of a Polygon 
    using the length of one side
        
    poly_area(7, 3)
    >>> 32.705

lucpet

# step 2
def seconds_difference(time_1, time_2):
    """ (number, number) -> number

    Return the number of seconds later that a time in seconds
    time_2 is than a time in seconds time_1.

    >>> seconds_difference(1800.0, 3600.0)
    1800.0
    >>> seconds_difference(3600.0, 1800.0)

lucpet

if 2 + 2 >= 5:    # if shit happens do shit
    print('woo hoo')
elif 2 + 2 >= 4:   # if that last shit didn't happen then do this
    print('yay')
else: 
    2 + 2 <= 3   # if none of that last shit happened then do this
    print('WTF')
#---------------------------------------------------------------- 
def stuff_happens(num):
    if 2 + num >= 5:    # if stuff happens do shit

lucpet

"""
Bars Module
============
This is an example module with provide different ways to print bars.
"""
def starbar(num):
    ''' (int) -> integer
    
    Prints a bar with *
        

lucpet

def get_length(dna):
    """ (str) -> int

    Return the length of the DNA sequence dna.

    >>> get_length('ATCGAT')
    6
    >>> get_length('ATCG')
    4
    """

lucpet

'''A board is a list of list of str. For example, the board
    ANTT
    XSOB
is represented as the list
    [['A', 'N', 'T', 'T'], ['X', 'S', 'O', 'B']]

A word list is a list of str. For example, the list of words
    ANT
    BOX
    SOB

lucpet

def future_value(present_value, annual_rate, periods_per_year, years):
    '''
    >>> future_value(500, .04, 10, 10)
    745.317442824
    '''
    rate_per_period = annual_rate / periods_per_year
    periods = periods_per_year * years
    
    future_value = present_value * (1 + rate_per_period) ** periods
    return future_value