Pippy

Pippy This activity was bundled sources in projects/pippy-activity TST Pippy Tickets all - active - new Pootle — POT Chris Ball see more templates or propose new

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

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"

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 apprppriate

print "OLPC would like to take this opportunity to acknowledge the community of people and projects that have made the XO laptop possible."

print "Hardware: John Watlington, Mark Foster, Mary Lou Jepsen, Yves Behar, Bret Recor, Jacques Gagne, Nicholas Negroponte, Scott Soong, Vance Ke, QUANTA team, Marvel Team, AMD team, ..."

print "Firmware: Ron Minnich, Richard Smith, Mitch Bradley, Tom Sylla, Lilian Walter, Bruce Wang, ..."

print "Kernel/Drivers: Jaya Kumar, Jon Corbet, Reynaldo Verdejo, Pierre Ossman, Dave Woodhouse, Matthew Garret, Chris Ball, Andy Tannenbaum, Linus Torvalds, Dave Jones, Andres Salomon, Marcelo Tosatti, ..."

print "Graphics systems: Jordan Crouse, Daniel Stone, Zephaniah Hull, Bernardo Innocenti, Behdad Esfahbod, Jim Gettys, Adam Jackson, Behdad Esfahbod ..."

print "Programming environments: 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, ..."

print "Sugar: Marco Presenti Gritti, Dan Williams, Chris Blizzard, John Palmieri, Lisa Strausfeld, Christian Marc Schmidt, Takaaki Okada, Eben Eliason, Walter Bender, Tomeu Vizoso, Simon Schampijer, ..."

print "Activities: Erik Blankinship, Bakhtiar Mikhak, Manusheel Gupta, the Abiword team, the Mozilla team, Jean Piché, Barry Vercoe, Richard Boulanger, Greg Thompson, Arjun Sarwal, the MaMaMedia team, ..."

print "Network: Michael Bletsas, James Cameron, Javier Cardona, Ronak Chokshi, ..."

print "Security: Ivan Krstić, Michael Stone, Scott Ananian, Herbert Poetzl, ..."

print "Content: Sj Klein, Mako Hill, Xavi, ..."

print "Testing, production: Kim Quirk, Alex Latham, Giannis Galanis, Ricardo Carrano, ..."

print "Support behind the scenes: Carla Gomez Monroy, David Cavallo, Robert Fadel, Antonio Battro, CHuck Kane (Grasshopper), Nia Lewis, Felice Gardner, Lindsay Petrillose, Jill Clark, Julia Reynolds, David Roberson, Danny Clark, Rebecca Allen, Howard Anderson, José María Aznar, V. Michael Bove, Jr., William Kolb, Ayo Kusamotu, Rodrigo Mesquita, Eben Moglen, Seymour Papert, Bruce Parker, Mitchel Resnick, Ted Selker, Larry Weber, Jackie Lustig, Jodi Petrie, George Snell, Kyle Austin, Hilary Meserole, Erick A. Betancourt, Michael Borosky, Sylvain Lefebvre, Martin Le Sauteur, 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); Seymour Papert (MIT Media Lab); Steve Kaufman (Riverside); Will Swope (Intel); and Tom Meredith (MFI)"

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"