Beginner Projects (http://www.reddit.com/r/beginnerprojects)

99bottles.py

# http://www.reddit.com/r/beginnerprojects/comments/19kxre/project_99_bottles_of_beer_on_the_wall_lyrics/
# GOAL
#   Create a program that prints out every line to the song "99 bottles of beer on the wall." This should be a pretty simple
#   program, so to make it a bit harder, here are some rules to follow.
# RULES
#   If you are going to use a list for all of the numbers, do not manually type them all in. Instead, use a built in function.
#   Besides the phrase "take one down," you may not type in any numbers/names of numbers directly into your song lyrics.
#   Remember, when you reach 1 bottle left, the word "bottles" becomes singular.
def amount_of_beer_in_words(bottles):
    if bottles == 1:
        noun = "bottle"
    else:
        noun = "bottles"
    return "%d %s of beer" % (bottles, noun)

bottles_of_beer = 99
while bottles_of_beer > 0:
    print "{b} on the wall, {b}.".format(b=amount_of_beer_in_words(bottles_of_beer)),
    bottles_of_beer = bottles_of_beer - 1
    print "Take one down, pass it around, {b} on the wall.".format(b=amount_of_beer_in_words(bottles_of_beer))
    print ""

rock_paper_scissors.py

# http://www.reddit.com/r/beginnerprojects/comments/2ah82f/rock_paper_scissors/
# You must make a rock paper scissors game
# Goal
#   Ask the player if they pick rock paper or scissors
#   Have the computer chose its move
#   Compare the choices and decide who wins
#   Print the results
# Subgoals
#   Let the player play again
#   Keep a record of the score e.g. (Player: 3 / Computer: 6)
import random

choices = ('rock', 'paper', 'scissors')
what_beats = {choices[i]: choices[(i+1)%len(choices)] for i in range(len(choices))}
score = {'computer': 0, 'player': 0}

while score['computer'] < 10 and score['player'] < 10:
    while True:
        player_choice = raw_input('rock, paper, or scissors? ')
        if player_choice not in choices:
            print "You didn't choose a valid option."
        else:
            break

    computer_choice = random.choice(choices)
    print "Computer chose %s." % computer_choice

    if what_beats[player_choice] == computer_choice:
        print "Computer wins, %s beats %s!" % (computer_choice, player_choice)
        score['computer'] += 1
    elif what_beats[computer_choice] == player_choice:
        print "Player wins, %s beats %s!" % (player_choice, computer_choice)
        score['player'] += 1
    else:
        print "No one won!"

    print "Score is now Computer: %d, Player: %d" % (score['computer'], score['player'])

print "Game over! ",
if score['computer'] > score['player']:
    print "Computer is the ultimate winner!"
elif score['player'] > score['computer']:
    print "You are the ultimate winner!"
else:
    print "A tie!"