Contents
- ascii.py
- ascii_table.py
- daysOfWeek.py
- fibs2.py
- fibs.py
- handling_bad_input.py
- pick4num.py
ascii.py 1/7
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# Conversion of a text message into ASCII
# by Sara Sprenkle
print()
print("This program converts a textual message into a sequence")
print("of numbers representing the ASCII encoding of the message.")
print()
message = input("Enter the message to encode: ")
print()
print("Here are the ASCII codes for '" + message + "':")
for ch in message:
print(ord(ch), end=" ")
print()
ascii_table.py 2/7
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# Create a table of numbers (ASCII) and their character equivalent
# by Sara Sprenkle
print("This program prints out the ASCII Table")
print("DEC CHAR")
print("-"*3, "-"*4)
for i in range(33, 127):
print("%3d %4s" % (i, chr(i)))
daysOfWeek.py 3/7
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# Example illustrating list operations: concatenation and iteration
# by Sara Sprenkle
weekDays = ["Mon", "Tue", "Wed", "Thu", "Fri"]
weekendDays = ["Sat", "Sun"]
# combine two lists into one
daysOfWeek = weekDays + weekendDays
print("The Days of the Week:")
# iterate through elements of list
for day in daysOfWeek:
print(day)
print("\nAGAIN!")
# iterate through positions of list
for x in range(len(daysOfWeek)):
print(daysOfWeek[x])
print()
daysOfWeek = weekendDays[-1:] + weekDays + weekendDays[:1]
extractWeekend = daysOfWeek[:1] + daysOfWeek[-1:]
print("Extracted weekend: ", extractWeekend)
extractWeekend2 = [daysOfWeek[0], daysOfWeek[-1]]
print("Extracted weekend: ", extractWeekend2)
notExtractedWeekend = daysOfWeek[0] + daysOfWeek[1]
print("Does not work: ", notExtractedWeekend)
fibs2.py 4/7
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# Example of creating a list of the appropriate size
# Computes the first SIZE Fibonacci numbers
# Sara Sprenkle
SIZE = 15
print("This program generates the first", SIZE, "Fibonacci numbers")
# creates a list of size 15, containing numbers 0-15
fibs = list(range(SIZE))
# alternative: create list of size 15, all containing 0s: [0]*15
fibs[0] = 1
fibs[1] = 1
for x in range(2, len(fibs)):
newfib = fibs[x-1]+fibs[x-2]
fibs[x] = newfib
print(fibs)
# To print out the list, each element on a separate line
#for num in fibs:
# print num
fibs.py 5/7
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# Example of appending to a list
# Computes the first SIZE Fibonacci numbers
# Sara Sprenkle
SIZE = 15
print("This program generates the first", SIZE, "Fibonacci numbers")
# create an empty list
fibs = []
# append the first two Fibonacci numbers
fibs.append(1)
fibs.append(1)
# compute the next 13 Fibonacci numbers
for x in range(2,SIZE):
newfib = fibs[x-1]+fibs[x-2]
fibs.append(newfib)
# print the Fibonacci numbers as a list
print(fibs)
# Tradeoff of using more space (the list) for easier implementation
handling_bad_input.py 6/7
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# Handling Bad Input
# by Sara Sprenkle
WMIN = 2
WMAX = 80
HMIN = 2
HMAX = 20
WIDTH_INPUT = "Enter a width (" + str(WMIN) + "-" + str(WMAX) + "): "
HEIGHT_INPUT = "Enter a height (" + str(HMIN) + "-" + str(HMAX) + "): "
width = eval(input(WIDTH_INPUT))
height = eval(input(HEIGHT_INPUT))
error = False
errorMessage = "\nError: \n"
if width < WMIN or width > WMAX:
error = True
errorMessage += "\tWidth (" +str(width) + ") is not within range (" + str(WMIN) + "-" + str(WMAX) + ")\n"
if height < HMIN or height > HMAX:
error = True
errorMessage += "\tHeight (" +str(height) + ") is not with range ("+ str(HMIN) + "-" + str(HMAX) + ")\n"
if error:
print(errorMessage)
pick4num.py 7/7
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# Simulate Pick 4 lottery game - selecting ping pong balls at random
# Modified to figure out if the user entered the winning number
# By CSCI111
from random import *
import sys
# define constants that are easy to change so that our
# program is flexible
NUM_PICKS = 4
MIN_VALUE = 0
MAX_VALUE = 9
NUMFORMAT="####"
pickedNum = input("What is your pick? (Format: " + NUMFORMAT + ") ")
###### handle bad input ######
error = True
errorMessage = "Error:\n"
# Check that user enters a string that contains only numbers
if not pickedNum.isdigit():
errorMessage += "\tYour number must contain only numbers\n"
error = True
# User enters a number that is not four digits long
if len(pickedNum) != 4:
errorMessage += "\tYour number must contain four numbers"
error = True
if error:
print(errorMessage)
sys.exit()
# Generate the random number
winningNum = "" # start it as empty
for i in range(NUM_PICKS):
# generate a random number
# add the random number to the previous random number
winningNum += str(randint(MIN_VALUE,MAX_VALUE))
print("The winning Pick 4 lottery number is ", winningNum)
print()
if winningNum == pickedNum:
print("Congratulations! You are very lucky and rich!")
print("We should be friends!")
else:
print("Sorry, you lost.")
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