The core of extensible programming is defining functions. Python allows mandatory and optional arguments, keyword arguments, and even arbitrary argument lists
Basics of python with suitable examples (data types, loops (if, else, elif, while, for) , functions and its types and a program in python used for ordering the numbers)
All data values in Python are encapsulated in relevant object classes. Everything in Python is an object and every object has an identity, a type, and a value. Like another object-oriented language such as Java or C++, there are several data types which are built into Python. Extension modules which are written in C, Java, or other languages can define additional types.
To determine a variable's type in Python you can use the type() function. The value of some objects can be changed. Objects whose value can be changed are called mutable and objects whose value is unchangeable (once they are created) are called immutable.
This presentation is all about various built in
datastructures which we have in python.
List
Dictionary
Tuple
Set
and various methods present in each data structure
Basics of python with suitable examples (data types, loops (if, else, elif, while, for) , functions and its types and a program in python used for ordering the numbers)
All data values in Python are encapsulated in relevant object classes. Everything in Python is an object and every object has an identity, a type, and a value. Like another object-oriented language such as Java or C++, there are several data types which are built into Python. Extension modules which are written in C, Java, or other languages can define additional types.
To determine a variable's type in Python you can use the type() function. The value of some objects can be changed. Objects whose value can be changed are called mutable and objects whose value is unchangeable (once they are created) are called immutable.
This presentation is all about various built in
datastructures which we have in python.
List
Dictionary
Tuple
Set
and various methods present in each data structure
Python is an interpreted, object-oriented programming language similar to PERL, that has gained popularity because of its clear syntax and readability.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Its high-level built in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development, as well as for use as a scripting or glue language to connect existing components together.
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.
String literals in python are surrounded by either single quotation marks, or double quotation marks. Strings can be output to screen using the print function. For example: print("hello"). Like many other popular programming languages, strings in Python are arrays of bytes representing unicode characters.
Python is an interpreted, object-oriented programming language similar to PERL, that has gained popularity because of its clear syntax and readability.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Its high-level built in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development, as well as for use as a scripting or glue language to connect existing components together.
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.
String literals in python are surrounded by either single quotation marks, or double quotation marks. Strings can be output to screen using the print function. For example: print("hello"). Like many other popular programming languages, strings in Python are arrays of bytes representing unicode characters.
Introduction to Python 01-08-2023.pon by everyone else. . Hence, they must be...DRVaibhavmeshram1
Python
Language
is uesd in engineeringStory adapted from Stephen Covey (2004) “The Seven Habits of Highly Effective People” Simon & Schuster).
“Management is doing things right, leadership is doing the right things”
(Warren Bennis and Peter Drucker)
Story adapted from Stephen Covey (2004) “The Seven Habits of Highly Effective People” Simon & Schuster).
“Management is doing things right, leadership is doing the right things”
(Warren Bennis and Peter Drucker)
Story adapted from Stephen Covey (2004) “The Seven Habits of Highly Effective People” Simon & Schuster).
“Management is doing things right, leadership is doing the right things”
(Warren Bennis and Peter Drucker)
The Sponsor:
Champion and advocates for the change at their level in the organization.
A Sponsor is the person who won’t let the change initiative die from lack of attention, and is willing to use their political capital to make the change happen
The Role model:
Behaviors and attitudes demonstrated by them are looked upon by everyone else. . Hence, they must be willing to go first.
Employees watch leaders for consistency between words and actions to see if they should believe the change is really going to happen.
The decision maker:
Leaders usually control resources such as people, budgets, and equipment, and thus have the authority to make decisions (as per their span of control) that affect the initiative.
During change, leaders must leverage their decision-making authority and choose the options that will support the initiative.
The Decision-Maker is decisive and sets priorities that support change.
The Sponsor:
Champion and advocates for the change at their level in the organization.
A Sponsor is the person who won’t let the change initiative die from lack of attention, and is willing to use their political capital to make the change happen
The Role model:
Behaviors and attitudes demonstrated by them are looked upon by everyone else. . Hence, they must be willing to go first.
Employees watch leaders for consistency between words and actions to see if they should believe the change is really going to happen.
The decision maker:
Leaders usually control resources such as people, budgets, and equipment, and thus have the authority to make decisions (as per their span of control) that affect the initiative.
During change, leaders must leverage their decision-making authority and choose the options that will support the initiative.
The Decision-Maker is decisive and sets priorities that support change.
The Sponsor:
Champion and advocates for the change at their level in the organization.
A Sponsor is the person who won’t let the change initiative die from lack of attention, and is willing to use their political capital to make the change happen
The Role model:
Behaviors and attitudes demonstrated by them are looked upon by everyone else. . Hence, they must be willing to go first.
Employees watch leaders for consistency between words and actions to see if they s
Web technologies are in a constant state of flux. It’s impossible to predict which will fail, which will shine brightly then quickly fade away, and which have real longevity. Rapid innovation is what makes web app development so exciting, but shiny new things shouldn’t be pursued without a solid understanding of the underlying web platform.
Open Source software is gaining momentum. Two facts witness its astonishing diffusion. On one hand, the demand for Open Source solutions is rising very fast; nowadays thousands of individuals and organisations are running Open Source programs on their systems. On the other hand, there are more and more Open Source projects and an ever-increasing number of programmers contribute to them.
The goal of user authentication is to establish a user’s identity using one or more mechanisms, e.g. what the
user is, knows, or has, or where they are. While textual passwords are by far the most commonly used method
for user authentication in computer systems
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
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.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
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
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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.
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.
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.
Pile Foundation by Venkatesh Taduvai (Sub Geotechnical Engineering II)-conver...
Pythonintroduction
1. What Is Python?
Created in 1990 by Guido van Rossum
While at CWI, Amsterdam
Now hosted by centre for national research initiatives,
Reston, VA, USA
Free, open source
And with an amazing community
Object oriented language
“Everything is an object”
2. Why Python?Designed to be easy to learn and master
Clean, clear syntax
Very few keywords
Highly portable
Runs almost anywhere - high end servers and
workstations, down to windows CE
Uses machine independent byte-codes
Extensible
Designed to be extensible using C/C++, allowing
access to many external libraries
3. Python: a modern hybrid
A language for scripting and prototyping
Balance between extensibility and powerful built-in
data structures
genealogy:
Setl (NYU, J.Schwartz et al. 1969-1980)
ABC (Amsterdam, Meertens et al. 1980-)
Python (Van Rossum et all. 1996-)
Very active open-source community
4. Prototyping
Emphasis on experimental programming:
Interactive (like LISP, ML, etc).
Translation to bytecode (like Java)
Dynamic typing (like LISP, SETL, APL)
Higher-order function (LISP, ML)
Garbage-collected, no ptrs
(LISP, SNOBOL4)
5. Prototyping
Emphasis on experimental programming:
Uniform treatment of indexable structures (like
SETL)
Built-in associative structures (like SETL,
SNOBOL4, Postscript)
Light syntax, indentation is significant (from ABC)
6. Most obvious and notorious
features
Clean syntax plus high-level data types
Leads to fast coding
Uses white-space to delimit blocks
Humans generally do, so why not the language?
Try it, you will end up liking it
Variables do not need declaration
Although not a type-less language
7. A Digression on Block Structure
There are three ways of dealing with IF structures
Sequences of statements with explicit end (Algol-68,
Ada, COBOL)
Single statement
(Algol-60, Pascal, C)
Indentation (ABC, Python)
8. Sequence of Statements
IF condition THEN
stm;
stm;
..
ELSIF condition THEN
stm;
..
ELSE
stm;
..
END IF;
next statement;
9. Single Statement
IF condition THEN
BEGIN
stm;
stm;
END ..
ELSE IF condition THEN
BEGIN
stm;
..
END;
ELSE
BEGIN
stm;
..
END;
next-statement;
11. Pythonwin
These examples use Pythonwin
Only available on Windows
GUI toolkit using Tkinter available for most platforms
Standard console Python available on all platforms
Has interactive mode for quick testing of code
Includes debugger and Python editor
12. Interactive Python
Starting Python.exe, or any of the GUI environments
present an interactive mode
>>>prompt indicates start of a statement or
expression
If incomplete, ...prompt indicates second and
subsequent lines
All expression results printed back to interactive
console
13. Variables and Types(1 of 3)
Variables need no declaration
>>> a=1
>>>
As a variable assignment is a statement, there is no
printed result
>>> a
1
Variable name alone is an expression, so the result is
printed
14. Variables and Types (2 of 3)
Variables must be created before they can be used
>>> b
Traceback (innermost last):
File "<interactive input>", line
1, in ?
NameError: b
>>>
Python uses exceptions - more detail later
15. Variables and Types (3 of 3)
Objects always have a type
>>> a = 1
>>> type(a)
<type 'int'>
>>> a = "Hello"
>>> type(a)
<type 'string'>
>>> type(1.0)
<type 'float'>
16. Assignment versus Equality Testing
Assignment performed with single =
Equality testing done with double = (==)
Sensible type promotions are defined
Identity tested with is operator.
>>> 1==1
1
>>> 1.0==1
1
>>> "1"==1
0
17. Simple Data Types
Strings
May hold any data, including embedded NULLs
Declared using either single, double, or triple quotes
>>> s = "Hi there"
>>> s
'Hi there'
>>> s = "Embedded 'quote'"
>>> s
"Embedded 'quote'"
18. Simple Data Types
Triple quotes useful for multi-line strings
>>> s = """ a long
... string with "quotes" or anything
else"""
>>> s
' a long012string with "quotes" or
anything else'
>>> len(s)
45
19. Simple Data TypesInteger objects implemented using C longs
Like C, integer division returns the floor
>>> 5/2
2
Float types implemented using C doubles
No point in having single precision since execution
overhead is large anyway
20. Simple Data Types
Long Integers have unlimited size
Limited only by available memory
>>> long = 1L << 64
>>> long ** 5
21359870359209100823950217061695521146027045223
56652769947041607822219725780640550022962086936
576L
21. High Level Data Types
Lists hold a sequence of items
May hold any object
Declared using square brackets
>>> l = []# An empty list
>>> l.append(1)
>>> l.append("Hi there")
>>> len(l)
2
22. High Level Data Types
>>> l
[1, 'Hi there']
>>>
>>> l = ["Hi there", 1, 2]
>>> l
['Hi there', 1, 2]
>>> l.sort()
>>> l
[1, 2, 'Hi there']
23. High Level Data Types
Tuples are similar to lists
Sequence of items
Key difference is they are immutable
Often used in place of simple structures
Automatic unpacking
>>> point = 2,3
>>> x, y = point
>>> x
2
24. High Level Data Types
Tuples are particularly useful to return multiple
values from a function
>>> x, y = GetPoint()
As Python has no concept of byref parameters, this
technique is used widely
25. High Level Data Types
Dictionaries hold key-value pairs
Often called maps or hashes. Implemented using hash-
tables
Keys may be any immutable object, values may be any
object
Declared using braces
>>> d={}
>>> d[0] = "Hi there"
>>> d["foo"] = 1
26. High Level Data Types
Dictionaries (cont.)
>>> len(d)
2
>>> d[0]
'Hi there'
>>> d = {0 : "Hi there", 1 :
"Hello"}
>>> len(d)
2
27. Blocks
Blocks are delimited by indentation
Colon used to start a block
Tabs or spaces may be used
Mixing tabs and spaces works, but is discouraged
>>> if 1:
... print "True"
...
True
>>>
28. Blocks
Many hate this when they first see it
Most Python programmers come to love it
Humans use indentation when reading code to
determine block structure
Ever been bitten by the C code?:
if (1)
printf("True");
CallSomething();
31. Looping
while statement for more traditional loops
>>> i = 0
>>> while i < 2:
... print i
... i = i + 1
...
0
1
>>>
32. Functions
Functions are defined with the def statement:
>>> def foo(bar):
... return bar
>>>
This defines a trivial function named foo that takes a
single parameter bar
33. Functions
A function definition simply places a function object
in the namespace
>>> foo
<function foo at fac680>
>>>
And the function object can obviously be called:
>>> foo(3)
3
>>>
34. Classes
Classes are defined using the class statement
>>> class Foo:
... def __init__(self):
... self.member = 1
... def GetMember(self):
... return self.member
...
>>>
35. Classes
A few things are worth pointing out in the previous
example:
The constructor has a special name __init__, while a
destructor (not shown) uses __del__
The self parameter is the instance (ie, the this in C+
+). In Python, the self parameter is explicit (c.f. C++,
where it is implicit)
The name self is not required - simply a convention
36. Classes
Like functions, a class statement simply adds a class
object to the namespace
>>> Foo
<class __main__.Foo at 1000960>
>>>
Classes are instantiated using call syntax
>>> f=Foo()
>>> f.GetMember()
1
37. Modules
Most of Python’s power comes from modules
Modules can be implemented either in Python, or in
C/C++
import statement makes a module available
>>> import string
>>> string.join( ["Hi", "there"] )
'Hi there'
>>>
39. Exceptions
try / finally block can guarantee execute of code
even in the face of exceptions
>>> try:
... 1/0
... finally:
... print "Doing this anyway"
...
Doing this anyway
Traceback (innermost last): File "<interactive
input>", line 2, in ?
ZeroDivisionError: integer division or modulo
>>>
40. Threads
Number of ways to implement threads
Highest level interface modelled after Java
>>> class DemoThread(threading.Thread):
... def run(self):
... for i in range(3):
... time.sleep(3)
... print i
...
>>> t = DemoThread()
>>> t.start()
>>> t.join()
0
1 <etc>
41. Standard Library
Python comes standard with a set of modules, known
as the “standard library”
Incredibly rich and diverse functionality available
from the standard library
All common internet protocols, sockets, CGI, OS
services, GUI services (via Tcl/Tk), database, Berkeley
style databases, calendar, Python parser, file
globbing/searching, debugger, profiler, threading and
synchronisation, persistency, etc
42. External library
Many modules are available externally covering
almost every piece of functionality you could ever
desire
Imaging, numerical analysis, OS specific functionality,
SQL databases, Fortran interfaces, XML, Corba, COM,
Win32 API, etc
Way too many to give the list any justice
43. Python ProgramsPython programs and modules are written as text files
with traditionally a .py extension
Each Python module has its own discrete namespace
Name space within a Python module is a global one.
44. Python ProgramsPython modules and programs are differentiated only
by the way they are called
.py files executed directly are programs (often referred
to as scripts)
.py files referenced via the import statement are
modules
45. Python Programs
Thus, the same .py file can be a program/script, or a
module
This feature is often used to provide regression tests
for modules
When module is executed as a program, the regression
test is executed
When module is imported, test functionality is not
executed
46. More Information on Python
Can’t do Python justice in this short time frame
But hopefully have given you a taste of the language
Comes with extensive documentation, including
tutorials and library reference
Also a number of Python books available
Visit www.python.org for more details
Can find python tutorial and reference manual
47. Scripting Languages
What are they?
Beats me
Apparently they are programming languages used for
building the equivalent of shell scripts, i.e. doing the
sort of things that shell scripts have traditionally been
used for.
But any language can be used this way
So it is a matter of convenience
48. Characteristics of Scripting Languages
Typically interpretive
But that’s an implementation detail
Typically have high level data structures
But rich libraries can substitute for this
For example, look at GNAT.Spitbol
Powerful flexible string handling
Typically have rich libraries
But any language can meet this requirement
49. Is Python A Scripting Language?
Usually thought of as one
But this is mainly a marketing issue
People think of scripting languages as being easy to
learn, and useful.
But Python is a well worked out coherent dynamic
programming language
And there is no reason not to use it for a wide range of
applications.
Editor's Notes
Newsgroup comp.lang.python, with a mailing list mirror available at www.python.org
Available on almost every OS in any sort of common use - all Unixs and variants, Redhat linux includes RPMs, mainframes, CE devices, etc
No separate compilation step - compiled version is cached when used.
Many people new to Python have trouble seeing any significant different between tuples and lists.
Lists are mutable, so can not be used as dictionary keys
Tuples are immutable, so are suited to be used in the place of structures.
Lists are generally used to hold variable length sequences - as tuples are immutable, they are generally used to hold sequences whose length is known in advance.
Note
The number printed in the function object representation is simply the address is memory of the object. Objects can define their own printed representation.