Pippy
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The Pippy interface
Description & Goals
Summary
Teaches Python programming by providing access to a fully interactive Python interpreter.?
The user can type simple expressions with some mathematical functions and execute the expression. This means that there is some overlap between Pippy and Calculate.
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Goals
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Collaboration
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Examples
Please add examples here, or modify the existing ones!
Math
Apples
Author: Madeleine Ball
print "Let's do math!" print "On Monday I picked 22 apples. On Tuesday I picked 12." print "Now I have: ", 22 + 12 print "My brother says he picked twice as many apples last week." print "This means he picked: ", (22 + 12) * 2 print "I have 3 friends I would like to give apples." print "One third of my apples is about: ", (22 + 12) / 3 print "Or, more exactly: ", (22.0 + 12.0) / 3.0
Pascal's triangle
Author: Madeleine Ball
# Pascal's triangle
lines = 8
vector = [1]
for i in range(1,lines+1):
vector.insert(0,0)
vector.append(0)
for i in range(0,lines):
newvector = vector[:]
for j in range(0,len(vector)-1):
if (newvector[j] == 0):
print " ",
else:
print "%2d" % newvector[j],
newvector[j] = vector[j-1] + vector[j+1]
print
vector = newvector[:]
Sierpinski triangle
Author: Madeleine Ball
Modification of the Pascal's triangle program to produce Sierpinski triangles.
size = 5
modulus = 2
lines = modulus**size
vector = [1]
for i in range(1,lines+1):
vector.insert(0,0)
vector.append(0)
for i in range(0,lines):
newvector = vector[:]
for j in range(0,len(vector)-1):
if (newvector[j] == 0):
print " ",
else:
remainder = newvector[j] % modulus
if (remainder == 0):
print "O",
else:
print ".",
newvector[j] = vector[j-1] + vector[j+1]
print
vector = newvector[:]
Times1
Author: Chris Ball
for i in range(1,13):
print i, "x 4 =", (i*4)
Times2
Author: Chris Ball
number = input("Which times table? ")
for i in range(1,13):
print i, "x", number, "=", i*number
Fibonacci Series
Author : Rafael Ortiz
a, b = 0, 1
while b < 1001:
print b,
a, b = b, a+b
Pythagoras
Author : Rafael Ortiz
import math
from math import sqrt
print "This is the Pythagoras Theorem"
a=float(raw_input("Type a ="))
b=float(raw_input("Type b ="))
c=sqrt((a*a)+(b*b))
print "c =",c
Factorize
Author: Reinier Heeres
import math
import sys
orignum = input("Enter a number to factorize ")
factors = []
num = orignum
i = 2
while i <= math.sqrt(num):
if num % i == 0:
factors.append(i)
num /= i
i = 2
elif i == 2:
i += 1
else:
i += 2
factors.append(num)
if len(factors) == 1:
print "%d is prime" % orignum
else:
sys.stdout.write("%d is %d" % (orignum, factors[0]))
for fac in factors[1:]:
sys.stdout.write(" * %d" % fac)
print
Zeros of a second degree polynomial
Author: Pilar Saenz
import math
from math import sqrt
print "These are the zeros of a second grade polynomial"
a=float(raw_input("Type a ="))
b=float(raw_input("Type b ="))
c=float(raw_input("Type c ="))
aux=b*b-4*a*c;
if aux>0:
x1=(-b+sqrt(aux))/(2*a)
x2=(-b-sqrt(aux))/(2*a)
print "x1= " , x1 ,", x2=" ,x2
elif aux==0:
print "x= " , -b/(2*a)
else:
x1=(-b+sqrt(-aux)*1j)/(2*a)
x2=(-b+sqrt(-aux)*1j)/(2*a)
print "x1= " , x1 , ", x2" , x2
Factorial of a number
Author: Pilar Saenz
def factorial(a):
fac=a
for i in range(1,a):
fac=fac*i
print a,"!=",fac
a=int(raw_input("Type a="))
factorial(a)
Greatest common divisor
Author: Pilar Saenz
n= input("Enter a number ")
m= input("Enter another number ")
r=n%m
if r!=0:
while (r!=0):
n=m
m=r
r=n%m
print "The greatest common divisor is ", m
Python
Function
Author: Chris Ball
def square(x):
print x * x
square(3)
square(4)
If
Author: Chris Ball
number = input("Enter a number: ")
if number > 5:
print "Greater than 5"
elif number < 5:
print "Less than 5"
else:
print "Number is 5!"
Recursion
Author: Mel Chua
# Note this assumes you understand functions and if-else.
def countbackwards(number):
print "I have the number", number
if number > 0:
print "Calling countbackwards again!"
countbackwards(number-1)
else:
print "I am done counting"
number = input("Enter a number: ")
countbackwards(number):
While
Author Pilar Saenz
n=input("enter a number")
while n>0:
print n, " ",
n=n-1
print "Surprise!\n"
Title Case Capitalisation
Author: Alan Davies
# This is an example of a list comprehension oldtitle = "this TITLE iS NOW coRRecTly CAPItalised" oldwords = oldtitle.split() newwords = [word[0].upper() + word[1:].lower() for word in oldwords] newtitle = " ".join(newwords) print "Before:", oldtitle print "After:", newtitle
Names Drawn From a Hat
Author: Alan Davies
# Simple and possibly useful program for
# drawing names in a random order from a hat
import random
names = []
name = raw_input("Enter the first name to go in the hat:")
while name != "":
names.append(name)
name = raw_input("Enter another name, leave blank if you have finished:")
random.shuffle(names)
print "The random order from the hat is:"
for x in range(len(names)):
print x+1, names[x]
String
Hello1
Author: Chris Ball
print "Hello everyone!"
Hello2
Author: Chris Ball
name = raw_input("Type your name here: ")
print "Hello " + name + "!"
Thanks
Author: Walter Bender
Comment: 1st pass—please add names as appropriate
import random
from random import choice
table = {
'Hardware & Mechanicals': 'John Watlington, Mark Foster, Mary Lou Jepsen, Yves Behar, Bret Recor, Mitch Pergola, Martin Schnitzer, Kenneth Jewell, Kevin Young, Jacques Gagne, Nicholas Negroponte, Frank Lee, Victor Chau, Albert Hsu, HT Chen, Vance Ke, Ben Chuang, Johnson Huang, Sam Chang, Alex Chu, Roger Huang, and the rest of the Quanta team, the Marvell team, the AMD team, the ChiMei team..',
'Firmware': 'Ron Minnich, Richard Smith, Mitch Bradley, Tom Sylla, Lilian Walter, Bruce Wang..',
'Kernel & Drivers': 'Jaya Kumar, Jon Corbet, Reynaldo Verdejo, Pierre Ossman, Dave Woodhouse, Matthew Garrett, Chris Ball, Andy Tanenbaum, Linus Torvalds, Dave Jones, Andres Salomon, Marcelo Tosatti..',
'Graphics systems': 'Jordan Crouse, Daniel Stone, Zephaniah Hull, Bernardo Innocenti, Behdad Esfahbod, Jim Gettys, Adam Jackson, Behdad Esfahbod..',
'Programming': 'Guido Van Rossum, Johan Dahlin, Brian Silverman, Alan Kay, Kim Rose, Bert Freudenberg, Yoshiki Ohshima, Takashi Yamamiya, Scott Wallace, Ted Kaehler, Stephane Ducasse, Hilaire Fernandes..',
'Sugar': 'Marco Pesenti Gritti, Dan Williams, Chris Blizzard, John Palmieri, Lisa Strausfeld, Christian Marc Schmidt, Takaaki Okada, Eben Eliason, Walter Bender, Tomeu Vizoso, Simon Schampijer, Reinier Heeres, Ben Saller, Miguel Alvarez..',
'Activities': 'Erik Blankinship, Bakhtiar Mikhak, Manusheel Gupta, J.M. Maurer (uwog) and the Abiword team, the Mozilla team, Jean Piche, Barry Vercoe, Richard Boulanger, Greg Thompson, Arjun Sarwal, Cody Lodrige, Shannon Sullivan, Idit Harel, and the MaMaMedia team, John Huang, Bruno Coudoin, Eduardo Silva, H&?kon Wium Lie, Don Hopkins, Muriel de Souza Godoi, Benjamin M. Schwartz..',
'Network': 'Michael Bletsas, James Cameron, Javier Cardona, Ronak Chokshi, Polychronis Ypodimatopoulos, Simon McVittie, Dafydd Harries, Sjoerd Simons, Morgan Collett, Guillaume Desmottes, Robert McQueen..',
'Security': 'Ivan Krstic, Michael Stone, C. Scott Ananian, Noah Kantrowitz, Herbert Poetzl, Marcus Leech..',
'Content': 'SJ Klein, Mako Hill, Xavier Alvarez, Alfonso de la Guarda, Sayamindu Dasgupta, Mallory Chua, Lauren Klein, Zdenek Broz, Felicity Tepper, Andy Sisson, Christine Madsen, Matthew Steven Carlos, Justin Thorp, Ian Bicking, Christopher Fabian, Wayne Mackintosh, the OurStories team, Will Wright, Chuck Normann..',
'Testing': 'Kim Quirk, Alex Latham, Giannis Galanis, Ricardo Carrano, Zach Cerza, John Fuhrer..',
'Country Support': 'Carla Gomez Monroy, David Cavallo, Matt Keller, Khaled Hassounah, Antonio Battro, Audrey Choi, Habib Kahn, Arnan (Roger) Sipitakiat',
'Administrative Support': 'Nia Lewis, Felice Gardner, Lindsay Petrillose, Jill Clarke, Julia Reynolds, Tracy Price, David Robertson, Danny Clark',
'Finance & Legal': 'Eben Moglen, Bruce Parker, William Kolb, John Sare, Sandra Lee, Richard Bernstein, Jaclyn Tsai, Jaime Cheng, Robert Fadel, Charles Kane (Grasshopper), Kathy Paur, Andriani Ferti',
'PR and Media': 'Larry Weber, Jackie Lustig, Jodi Petrie, George Snell, Kyle Austin, Hilary Meserole, Erick A. Betancourt, Michael Borosky, Sylvain Lefebvre, Martin Le Sauteur',
'Directors & Advisors': 'Howard Anderson, Rebecca Allen, Ayo Kusamotu, Jose Maria Aznar, V. Michael Bove, Jr., Rodrigo Mesquita, Seymour Papert, Ted Selker, Ethan Beard (Google); John Roese (Nortel); Dandy Hsu (Quanta); Marcelo Claure (Brightstar); Gary Dillabough (eBay); Gustavo Arenas (AMD); Mike Evans (Red Hat); Ed Horowitz (SES Astra); Jeremy Philips (NewsCorp); Scott Soong (Chi Lin); Sehat Sutardja (Marvell); Joe Jacobson (MIT Media Lab); Steve Kaufman (Riverside); Will Swope (Intel); and Tom Meredith (MFI)',
'Pippy': 'Chris Ball'
}
print "OLPC would like to take this opportunity to acknowledge the community of people and projects that have made the XO laptop possible."
subsystem = random.choice(table.keys());
print subsystem, '\t',table[subsystem]
Graphics
Jump
Author: C. Scott Ananian
# both of these functions should be in the 'basic' package or some such
def clear_scr():
print '\x1B[H\x1B[J' # clear screen, the hard way.
def wait():
import time
time.sleep(0.1)
# jumping man!
# was having to escape the backslash which was rather unfortunate,
# now using python's r" strings which were meant for regex's
# i didn't have to do that in C64 BASIC
for i in xrange(0,50):
clear_scr()
print r"\o/"
print r"_|_"
print r" "
wait()
clear_scr()
print r"_o_"
print r" | "
print r"/ \"
wait()
clear_scr()
print r" o "
print r"/|\"
print r"| |"
wait()
clear_scr()
print r"_o_"
print r" | "
print r"/ \"
wait()
Graphics
Jump
Author: C. Scott Ananian
# both of these functions should be in the 'basic' package or some such
def clear_scr():
print '\x1B[H\x1B[J' # clear screen, the hard way.
def wait():
import time
time.sleep(0.1)
# jumping man!
# was having to escape the backslash which was rather unfortunate,
# now using python's r" strings which were meant for regex's
# i didn't have to do that in C64 BASIC
for i in xrange(0,50):
clear_scr()
print r"\o/"
print r"_|_"
print r" "
wait()
clear_scr()
print r"_o_"
print r" | "
print r"/ \"
wait()
clear_scr()
print r" o "
print r"/|\"
print r"| |"
wait()
clear_scr()
print r"_o_"
print r" | "
print r"/ \"
wait()
Games
Guess a number
Author: Pilar Saenz
import random
from random import randrange
R = randrange(1,100)
print "Guess a number between 1 and 100!!!"
N = input("Enter a number: ")
i=1
while (N!=R):
if N>R :
print "Too big... try again"
else :
print "Too small.. try again"
N = input("Enter a number: ")
i=i+1
print "You got it in ", i, "tries"