Python packages contain multiple modules stored within a folder. To create a package named "mypckg" containing modules "mod1" and "mod2", a folder called "mypckg" is made with an empty __init__.py file inside. Modules are then created within this folder. JSON is a lightweight data interchange format that is easy for humans to read and for machines to parse and generate. Python has a built-in JSON package to convert between Python and JSON objects.
INTRODUCTION TO PYTHON
Python is an interpreted, object-oriented, high-level programming language
Python's simple, easy to learn syntax emphasizes readability and therefore reduces the cost of program maintenance.
A standard distribution includes many modules
Dynamic typed Source can be compiled or run just-in-time Similar to perl, tcl, ruby
Why Python
Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
Python has a simple syntax similar to the English language.
Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
Python can be treated in a procedural way, an object-oriented way or a functional way
Python Interfaces
IDLE : a cross-platform Python development
Python Win: a Windows only interface to Python
Python Shell running 'python' from the Command Line opens this interactive shell
IDLE — Development Environment
IDLE helps you program in Python by
color-coding your program code
debugging ' auto-indent ‘
interactive shell Python Shell
Auto indent
Example python
Print (“Hello World”)
output:
Hello World
Python Indentation
Indentation refers to the spaces at the beginning of a code line.
Where in other programming languages the indentation in code is for readability only, the indentation in Python is very important.
Python uses indentation to indicate a block of code.
Example:
if 5 > 2: print("Five is greater than two!")
Python Comments
Comments can be used to explain Python code.
Comments can be used to make the code more readable.
Comments can be used to prevent execution when testing code
Example
#This is a commentprint("Hello, World!")
Python Variables
Variables are containers for storing data values
Python has no command for declaring a variable.
A variable is created the moment you first assign a value to it
Example
x = 5y = "John"print(x)print(y)
Python - Variable Names
A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). Rules for Python variables:
A variable name must start with a letter or the underscore character
A variable name cannot start with a number
A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
Variable names are case-sensitive (age, Age and AGE are three different variables)
Example
Legal variable names:
myvar = "John"my_var = "John"_my_var = "John"myVar = "John"MYVAR = "John"myvar2 = "John
Python Variables - Assign Multiple Values
Python allows you to assign values to multiple variables in one line:
Example
x, y, z = "Orange", "Banana", "Cherry"print(x)print(y)print(z)
Python - Output Variables
Python output variable function are print()
Example
x = "Python is awesome"print(x)
Python - Global Variables
Variables that are created outside of a function (as in all
Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.
It is used for:
- web development (server-side),
- software development,
- mathematics,
- system scripting.
What can Python do?
Python can be used on a server to create web applications.
Python can be used alongside software to create workflows.
Python can connect to database systems. It can also read and modify files.
Python can be used to handle big data and perform complex mathematics.
Python can be used for rapid prototyping, or for production-ready software development.
- Why Python?
Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
Python has a simple syntax similar to the English language.
Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
Python can be treated in a procedural way, an object-oriented way or a functional way.
- what we learn:
1- Python Install.
2- Python Comments.
3- Python Variables.
4- Python Data Types.
5- Python Numbers.
INTRODUCTION TO PYTHON
Python is an interpreted, object-oriented, high-level programming language
Python's simple, easy to learn syntax emphasizes readability and therefore reduces the cost of program maintenance.
A standard distribution includes many modules
Dynamic typed Source can be compiled or run just-in-time Similar to perl, tcl, ruby
Why Python
Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
Python has a simple syntax similar to the English language.
Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
Python can be treated in a procedural way, an object-oriented way or a functional way
Python Interfaces
IDLE : a cross-platform Python development
Python Win: a Windows only interface to Python
Python Shell running 'python' from the Command Line opens this interactive shell
IDLE — Development Environment
IDLE helps you program in Python by
color-coding your program code
debugging ' auto-indent ‘
interactive shell Python Shell
Auto indent
Example python
Print (“Hello World”)
output:
Hello World
Python Indentation
Indentation refers to the spaces at the beginning of a code line.
Where in other programming languages the indentation in code is for readability only, the indentation in Python is very important.
Python uses indentation to indicate a block of code.
Example:
if 5 > 2: print("Five is greater than two!")
Python Comments
Comments can be used to explain Python code.
Comments can be used to make the code more readable.
Comments can be used to prevent execution when testing code
Example
#This is a commentprint("Hello, World!")
Python Variables
Variables are containers for storing data values
Python has no command for declaring a variable.
A variable is created the moment you first assign a value to it
Example
x = 5y = "John"print(x)print(y)
Python - Variable Names
A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). Rules for Python variables:
A variable name must start with a letter or the underscore character
A variable name cannot start with a number
A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
Variable names are case-sensitive (age, Age and AGE are three different variables)
Example
Legal variable names:
myvar = "John"my_var = "John"_my_var = "John"myVar = "John"MYVAR = "John"myvar2 = "John
Python Variables - Assign Multiple Values
Python allows you to assign values to multiple variables in one line:
Example
x, y, z = "Orange", "Banana", "Cherry"print(x)print(y)print(z)
Python - Output Variables
Python output variable function are print()
Example
x = "Python is awesome"print(x)
Python - Global Variables
Variables that are created outside of a function (as in all
Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.
It is used for:
- web development (server-side),
- software development,
- mathematics,
- system scripting.
What can Python do?
Python can be used on a server to create web applications.
Python can be used alongside software to create workflows.
Python can connect to database systems. It can also read and modify files.
Python can be used to handle big data and perform complex mathematics.
Python can be used for rapid prototyping, or for production-ready software development.
- Why Python?
Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
Python has a simple syntax similar to the English language.
Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
Python can be treated in a procedural way, an object-oriented way or a functional way.
- what we learn:
1- Python Install.
2- Python Comments.
3- Python Variables.
4- Python Data Types.
5- Python Numbers.
Introduction to the basics of Python programming (part 3)Pedro Rodrigues
This is the 3rd part of a multi-part series that teaches the basics of Python programming. It covers list and dict comprehensions, functions, modules and packages.
CS 360 LAB 3 STRINGS, FUNCTIONS, AND METHODSObjective The purpos.docxfaithxdunce63732
CS 360 LAB 3: STRINGS, FUNCTIONS, AND METHODS
Objective: The purpose of this lab is to get you comfortable with using the Python functions and modules.
Note: Python has a lot of modules that come with the language, which collectively are called the Python Standard Library. The Python documentation contains the specifications for all the functions in the library. You can get to it from the link on the course website, or by going here:
http://docs.python.org/library/
1) Strings
Strings have many handy methods, whose specifications can be found at the following URL:
http://docs.python.org/2/library/stdtypes.html#string-methods
Strings are a built-in type, so although there is a module named string, you do not need it for basic string operations.
To reference substrings (or even individual characters) we can use the bracket notation shown in class. Remember Python counts characters starting from zero|for example, s[1] is the second character in s.
One of the things to remember about strings is that they are immutable. Methods or sequence operations return new strings; they never modify the original string object.
Evaluating string Expressions. Before starting with the table below, enter the following assignment statement into the Python shell:
s = "Hello World!"
Once you have done that, you will use the string stored in s to _ll out the table below.
Expression Expected
Expected Value
Calculated value
Reason for calculated value
s[2]
s[15]
s[1:5]
s[:5]
s[5:]
"e" in s
"x" in s
s.index("e")
s.index("x")
s.index("l", 5)
where to start looking)
s.find("e")
s.find("x")
s.islower()
s[1:5].islower()
Prepared By: Kajal Nusratullah Page 1
Programming Languages CS 360
Lab Tutorial # 1 Week no 1 and 2
Visit the following link and Install Python 3.
www.python.org
Beginning with python
Type the following text to the right of the Python prompt and press the Enter key:
>>> print ("Hello, Python!")
Assigning Values to Variables:
Python variables do not have to be explicitly declared to reserve memory space. The declaration happens
automatically when you assign a value to a variable. The equal sign (=) is used to assign values to variables.
The operand to the left of the = operator is the name of the variable and the operand to the right of the = operator is
the value stored in the variable. For example:
counter = 100 # An integer assignment
miles = 1000.0 # A floating point
name = "John" # A string
print counter
print miles
print name
Here, 100, 1000.0 and "John" are the values assigned to counter, miles and name variables, respectively. While
running this program, this will produce the following result:
100
1000.0
John
Write down a program in C and Java that will
declare the same variables, assign the same
values and discuss th.
Python is a general-purpose, and multi-paradigm dynamic object oriented programming language. Python is a simple, portable, open source, and powerful programming language.
This presentation about Python Interview Questions will help you crack your next Python interview with ease. The video includes interview questions on Numbers, lists, tuples, arrays, functions, regular expressions, strings, and files. We also look into concepts such as multithreading, deep copy, and shallow copy, pickling and unpickling. This video also covers Python libraries such as matplotlib, pandas, numpy,scikit and the programming paradigms followed by Python. It also covers Python library interview questions, libraries such as matplotlib, pandas, numpy and scikit. This video is ideal for both beginners as well as experienced professionals who are appearing for Python programming job interviews. Learn what are the most important Python interview questions and answers and know what will set you apart in the interview process.
Simplilearn’s Python Training Course is an all-inclusive program that will introduce you to the Python development language and expose you to the essentials of object-oriented programming, web development with Django and game development. Python has surpassed Java as the top language used to introduce U.S. students to programming and computer science. This course will give you hands-on development experience and prepare you for a career as a professional Python programmer.
What is this course about?
The All-in-One Python course enables you to become a professional Python programmer. Any aspiring programmer can learn Python from the basics and go on to master web development & game development in Python. Gain hands on experience creating a flappy bird game clone & website functionalities in Python.
What are the course objectives?
By the end of this online Python training course, you will be able to:
1. Internalize the concepts & constructs of Python
2. Learn to create your own Python programs
3. Master Python Django & advanced web development in Python
4. Master PyGame & game development in Python
5. Create a flappy bird game clone
The Python training course is recommended for:
1. Any aspiring programmer can take up this bundle to master Python
2. Any aspiring web developer or game developer can take up this bundle to meet their training needs
Learn more at https://www.simplilearn.com/mobile-and-software-development/python-development-training
This presentation is a great resource for zero-based Python programmers who wants to learn Python 3. This course includes brief history of Python and familiarity of its basic syntax.
Introduction to the basics of Python programming (part 3)Pedro Rodrigues
This is the 3rd part of a multi-part series that teaches the basics of Python programming. It covers list and dict comprehensions, functions, modules and packages.
CS 360 LAB 3 STRINGS, FUNCTIONS, AND METHODSObjective The purpos.docxfaithxdunce63732
CS 360 LAB 3: STRINGS, FUNCTIONS, AND METHODS
Objective: The purpose of this lab is to get you comfortable with using the Python functions and modules.
Note: Python has a lot of modules that come with the language, which collectively are called the Python Standard Library. The Python documentation contains the specifications for all the functions in the library. You can get to it from the link on the course website, or by going here:
http://docs.python.org/library/
1) Strings
Strings have many handy methods, whose specifications can be found at the following URL:
http://docs.python.org/2/library/stdtypes.html#string-methods
Strings are a built-in type, so although there is a module named string, you do not need it for basic string operations.
To reference substrings (or even individual characters) we can use the bracket notation shown in class. Remember Python counts characters starting from zero|for example, s[1] is the second character in s.
One of the things to remember about strings is that they are immutable. Methods or sequence operations return new strings; they never modify the original string object.
Evaluating string Expressions. Before starting with the table below, enter the following assignment statement into the Python shell:
s = "Hello World!"
Once you have done that, you will use the string stored in s to _ll out the table below.
Expression Expected
Expected Value
Calculated value
Reason for calculated value
s[2]
s[15]
s[1:5]
s[:5]
s[5:]
"e" in s
"x" in s
s.index("e")
s.index("x")
s.index("l", 5)
where to start looking)
s.find("e")
s.find("x")
s.islower()
s[1:5].islower()
Prepared By: Kajal Nusratullah Page 1
Programming Languages CS 360
Lab Tutorial # 1 Week no 1 and 2
Visit the following link and Install Python 3.
www.python.org
Beginning with python
Type the following text to the right of the Python prompt and press the Enter key:
>>> print ("Hello, Python!")
Assigning Values to Variables:
Python variables do not have to be explicitly declared to reserve memory space. The declaration happens
automatically when you assign a value to a variable. The equal sign (=) is used to assign values to variables.
The operand to the left of the = operator is the name of the variable and the operand to the right of the = operator is
the value stored in the variable. For example:
counter = 100 # An integer assignment
miles = 1000.0 # A floating point
name = "John" # A string
print counter
print miles
print name
Here, 100, 1000.0 and "John" are the values assigned to counter, miles and name variables, respectively. While
running this program, this will produce the following result:
100
1000.0
John
Write down a program in C and Java that will
declare the same variables, assign the same
values and discuss th.
Python is a general-purpose, and multi-paradigm dynamic object oriented programming language. Python is a simple, portable, open source, and powerful programming language.
This presentation about Python Interview Questions will help you crack your next Python interview with ease. The video includes interview questions on Numbers, lists, tuples, arrays, functions, regular expressions, strings, and files. We also look into concepts such as multithreading, deep copy, and shallow copy, pickling and unpickling. This video also covers Python libraries such as matplotlib, pandas, numpy,scikit and the programming paradigms followed by Python. It also covers Python library interview questions, libraries such as matplotlib, pandas, numpy and scikit. This video is ideal for both beginners as well as experienced professionals who are appearing for Python programming job interviews. Learn what are the most important Python interview questions and answers and know what will set you apart in the interview process.
Simplilearn’s Python Training Course is an all-inclusive program that will introduce you to the Python development language and expose you to the essentials of object-oriented programming, web development with Django and game development. Python has surpassed Java as the top language used to introduce U.S. students to programming and computer science. This course will give you hands-on development experience and prepare you for a career as a professional Python programmer.
What is this course about?
The All-in-One Python course enables you to become a professional Python programmer. Any aspiring programmer can learn Python from the basics and go on to master web development & game development in Python. Gain hands on experience creating a flappy bird game clone & website functionalities in Python.
What are the course objectives?
By the end of this online Python training course, you will be able to:
1. Internalize the concepts & constructs of Python
2. Learn to create your own Python programs
3. Master Python Django & advanced web development in Python
4. Master PyGame & game development in Python
5. Create a flappy bird game clone
The Python training course is recommended for:
1. Any aspiring programmer can take up this bundle to master Python
2. Any aspiring web developer or game developer can take up this bundle to meet their training needs
Learn more at https://www.simplilearn.com/mobile-and-software-development/python-development-training
This presentation is a great resource for zero-based Python programmers who wants to learn Python 3. This course includes brief history of Python and familiarity of its basic syntax.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
2. What is a Python Package?
Python modules may contain several classes, functions,
variables, etc. whereas Python packages contain several
modules. In simpler terms, Package in Python is a folder that
contains various modules as files.
Creating Package
Let’s create a package in Python named mypckg that will contain
two modules mod1 and mod2.
To create this module follow the below steps:
Create a folder named mypckg.
Inside this folder create an empty Python file i.e. __init__.py
Then create two modules mod1 and mod2 in this folder.
4. JSON:
JavaScript Object Notation (JSON) is an easy to read and
write data interchange format.
JSON is used as an alternative to XML and is easy for
machines to parse and generate.
JSON is built on two structures - a collection of name-
value pairs (e.g. a Python dictionary) and ordered lists of
values (e.g.. A Pythonlist).
5. Python JSON
• JSON is a syntax for storing and exchanging
data.
• JSON is text, written with JavaScript object
notation.
JSON in Python
Python has a built-in package called json, which can be used to
work with JSON data.
Import the json module:
import json
6. Convert from JSON to Python
If you have a JSON string, you can parse it by
using the json.loads() method.
7. Example
• Convert from JSON to Python
• import json
• # some JSON:
• x = '{ "name":"John", "age":30, "city":"New York"}’
• # parse x:
• y = json.loads(x)
• # the result is a Python dictionary:
• print(y["age"])
8. Convert from Python to JSON
If you have a Python object, you can convert it
into a JSON string by using the json.dumps()
method.
9. Example
Convert from Python to JSON:
import json
# a Python object (dict):
x = {
"name": "John",
"age": 30,
"city": "New York"
}
# convert into JSON:
y = json.dumps(x)
# the result is a JSON string:
print(y)
10. You can convert Python objects of the following types,
into JSON strings:
dict
list
tuple
string
int
float
True
False
None
11. • Example
• Convert Python objects into JSON strings, and print
the values:
• import json
• print(json.dumps({"name": "John", "age": 30}))
• print(json.dumps(["apple", "bananas"]))
• print(json.dumps(("apple", "bananas")))
• print(json.dumps("hello"))
• print(json.dumps(42))
• print(json.dumps(31.76))
• print(json.dumps(True))
• print(json.dumps(False))
• print(json.dumps(None))
12. When you convert from Python to JSON, Python
objects are converted into the JSON (JavaScript)
equivalent:
Python JSON
dict Object
list Array
tuple Array
str String
int Number
float Number
True true
False false
None null
13. Example
Convert a Python object containing all the legal data types:
import json
x = {
"name": "John",
"age": 30,
"married": True,
"divorced": False,
"children": ("Ann","Billy"),
"pets": None,
"cars": [
{"model": "BMW 230", "mpg": 27.5},
{"model": "Ford Edge", "mpg": 24.1}
]
}
print(json.dumps(x))
14. • XML: XML (Extensible Markup Language) is a
data format for structured document
interchange.
• The Python minidom library provides a
minimal implementation of the Document
Object Model interface and has an API similar
to that in other languages.
15. HTTPLib & URLLib: HTTPLib2 and URLLib2 are Python
libraries used in network/internet programming.
SMTPLib: Simple Mail Transfer Protocol (SMTP) is a protocol
which handles sending email and routing e-mail between mail
servers. The Python smtplib module provides an SMTP client
session object that can be used to send email.
NumPy: NumPy is a package for scientific computing in Python.
NumPy provides support for large multi-dimensional arrays
and matrices.
16. What is XML?
• XML is an abbreviation name of "Extensible Markup
Language".
• It is used to understand data dynamically by the XML
framework.
• It is primarily focused on creating web pages where
the data has a specific structure.
• A page is created using the XML known as the XML
document.
• XML generates a tree-like structure that is
straightforward and supports hierarchy.
17. The sample structure of the XML file
<?xml version="1.0"?>
<catalog>
<book id="bk101">
<author>Gambardella, Matthew</author>
<title>XML Developer's Guide</title>
<genre>Computer</genre>
<price>44.95</price>
<publish_date>2000-10-01</publish_date>
<description>An in-depth look at creating applications
with XML.</description>