let's say the user enters H
the pyramid should like this:
       A
      ABA
     ABCBA
    ABCDCBA
   ABCDEDCBA
  ABCDEFEDCBA
 ABCDEFGFEDCBA
ABCDEFGHGFEDCBA
 

# the online gem store
 
def add2cart(item, amount):
    """build up the cart list"""
    price = amount*list_of_gems[item-1][1]
    cart.append((item-1, amount, price))
 
# list of (gem, price) tuples
list_of_gems = [('ruby', 99.99), ('emerald', 72.50), ('topaz', 23.95), ('agate', 14.00)]
 
# will be list of (item#, amount, price) tuples
cart = []
# total of all purchases
total = 0
 
while True:
    print '-'*32, '\n\t\tList of Gems\n', '-'*32
    for k in range(len(list_of_gems)):
        # starts with item_number to enter
        print '%d\t%8s for $%0.2f each' % (k+1, list_of_gems[k][0], list_of_gems[k][1])
    try:
        item = int(raw_input('\nPlease select a gem (by number): '))
        if item > len(list_of_gems):
            print "item number too high! Try again!"
            item = 0
    except ValueError:
        print "Item number not correct! Try again!"
        item = 0
    try:
        if item > 0:
            amount = int(raw_input('Enter quantity of selected item: '))
    except ValueError:
        print "Amount not correct, has to be whole number!  Try again!"
        amount = 0
    if item > 0 and amount > 0:
        add2cart(item, amount)
    else:
        print "Please enter item and amount again!\a\n"
 
    # added .lower() so user can enter 'No' or 'NO' or 'no'
    more = raw_input('Want to buy something else (yes/no)? ').lower()
    # user can enter 'no' or just 'n'
    if 'n' in more:
        print
        print "Thank you for your order, here is your purchase detail:"
        break
 
print '\n', '~'*38
for x in range(len(cart)):
    item_number = cart[x][0]
    gem = list_of_gems[item_number][0]
    price = list_of_gems[item_number][1]
    quantity = cart[x][1]    
    total_per_item = cart[x][2]
    print '%4d  %8s @ $%0.2f = $%5.2f' % (quantity, gem, price, total_per_item)
    total += total_per_item
 
print '~'*38
print "\t%18s = $%4.2f" % ('TOTAL', total)

# click on the red rectangle ...
 
from Tkinter import *
import random
 
def create_rect():
    chance = random.sample(range(1, 250), 4)
    print chance  # test  eg. [72, 206, 116, 166]
    canvas.create_rectangle(chance, fill="red")
 
def check_rect(event):
    rect = canvas.find_overlapping(event.x, event.y, event.x, event.y)
    if rect:
        # delete old rectangle
        canvas.delete(rect)
        # create new rectangle
        create_rect()
 
root = Tk()
root.title("click on red")
 
canvas = Canvas(root, height=250, width=250, bg="yellow")
canvas.pack()
 
# create the starting random rectangle
create_rect()
 
# respond to left mouse button click
canvas.bind("<Button-1>", check_rect)
 
root.mainloop()

# a simple banner using Tkinter
 
from Tkinter import *
 
#create the form
root = Tk()
 
canvas1 = Canvas(root, height=100, width=600, bg="white")
canvas1.pack()
 
str1 = "Happy Birthday Ursula!"
x = 20
y = 20
text1 = canvas1.create_text(x, y, anchor=NW, text=str1, font=('times', 32, 'bold'), fill='red')
 
root.mainloop()

- Say the word is "jelly" and they guessed "l"
 
--ll-

f=[0,1]
for i in range(input()-2):
 f.append(f[-2]+f[-1])
print f