User Account

All Pages

Lost, Python Programming

Assignment Help:
Import the sample code below into the Python IDLE and enhance it, run it and debug it. Add features to make this a more realistic database tool by providing for easy data entry and retrieval. Export your successful program to a Python file for later upload to coursenet.

Here is the sample source code:

#!/usr/bin/python
#
# An example from Sean Reifschneider''s Python Tutorial at Linux Expo 98.
#
# Copyright (c) 1998 Sean Reifschneider, tummy.com, ltd.
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# You can contact Sean Reifschneider at
# P.O. Box 270624,
# Fort Collins, CO USA 80527-0624,
# or at [email protected]
#
# Simple phone-number database module

import shelve
import string

UNKNOWN = 0
HOME = 1
WORK = 2
FAX = 3
CELL = 4

class phoneentry:
def __init__(self, name = ''Unknown'', number = ''Unknown'',
type = UNKNOWN):
self.name = name
self.number = number
self.type = type

# create string representation
def __repr__(self):
return(''%s:%d'' % ( self.name, self.type ))

# fuzzy compare or two items
def __cmp__(self, that):
this = string.lower(str(self))
that = string.lower(that)

if string.find(this, that) >= 0:
return(0)
return(cmp(this, that))

def showtype(self):
if self.type == UNKNOWN: return(''Unknown'')
if self.type == HOME: return(''Home'')
if self.type == WORK: return(''Work'')
if self.type == FAX: return(''Fax'')
if self.type == CELL: return(''Cellular'')

class phonedb:
def __init__(self, dbname = ''phonedata''):
self.dbname = dbname;
self.shelve = shelve.open(self.dbname);

def __del__(self):
self.shelve.close()
self.shelve = None

def add(self, name, number, type = HOME):
e = phoneentry(name, number, type)
self.shelve[str(e)] = e

def lookup(self, string):
list = []
for key in self.shelve.keys():
e = self.shelve[key]
if cmp(e, string) == 0:
list.append(e)

return(list)

# if not being loaded as a module, run a small test
if __name__ == ''__main__'':
foo = phonedb()
foo.add(''Sean Reifschneider'', ''970-555-1111'', HOME)
foo.add(''Sean Reifschneider'', ''970-555-2222'', CELL)
foo.add(''Evelyn Mitchell'', ''970-555-1111'', HOME)

print ''First lookup:''
for entry in foo.lookup(''reifsch''):
print ''%-40s %s (%s)'' % ( entry.name, entry.number, entry.showtype() )
print

print ''Second lookup:''
for entry in foo.lookup(''e''):
print ''%-40s %s (%s)'' % ( entry.name, entry.number, entry.showtype() )

Related Discussions:- Lost

Programming, We sell pdf''s from our site and pdfs can be ordered from the ...

We sell pdf''s from our site and pdfs can be ordered from the site by selecting a book, putting it in a shopping cart, then signing in with a password or as a guest, and then check

Python programme comparing for and while loops, 1)    Write a python progra...

1)    Write a python programmecomparing for and while loops like the following. Math Times table For Loop: 2x1=2 2x2=4 ..... 2x12=24 While Loop: 3x1=3 3x

Practical data science with python, need assistance with assignment

need assistance with assignment

Common Vulnerabilities, 1 Low Level Exploits 1.1 Savegames Jimmy is becomi...

1 Low Level Exploits 1.1 Savegames Jimmy is becoming increasingly frustrated at the computer game hes playing. He has a save right before the levels boss but he needs either more

Programs and data , Programs and Data Object-oriented programming is a...

Programs and Data Object-oriented programming is a popular way  of managing programs, which  groups together data  with  the procedures that  works on them,  thus  facilitatin

Python programing, Task (Anagrams) Write a function that checks whether two...

Task (Anagrams) Write a function that checks whether two words are anagrams. Two words are anagrams if they contain the same letters. Fore example, silent and listen are anagrams.

Help, When investing money, an important concept to know is compound intere...

When investing money, an important concept to know is compound interest. The equation FV = PV (1+rate)periods . This relates the following four quantities. The present value (

Create a program to produce a business speak phrase, The goal of this exerc...

The goal of this exercise is to write a \business phrase" generator, which each time it is called produces lines of business speak, such as: It's time that we became uber-effici

Homework Assignment #4, Programming

Programming

Primitives, Primitives, Composition, Abstraction, and Patterns   We ...

Primitives, Composition, Abstraction, and Patterns   We will  start  by thinking about  how  the  PCAP  framework applies to computer programs, in general. We may do that by

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd