Mr.D.R.....................

 

NOT MANDATORY TO PUBLISH IN JOURNALS BEFORE FINAL PHD THESIS.......... The Indian Express...............3 years back story..............in 2022

 

HOW TO ANALYZE OR WRITE CODE FOR A PROGRAM........................

 

5 Essential Built-in Modules for Every Python Developer .......In the world of Python, there’s a plethora of incredibly useful tools that come pre-installed with the Python standard library, right out of the box. In this article, we’re going to check out five of these modules that every Python developer should know about.

 

• sys: The sys module helps us interact with the Python system itself. It's like a backstage pass that lets us access things like command-line arguments and information about the Python version running our code.

# Import the sys module
import sys

os: With the os module, we can do all sorts of things related to the operating system. It's like a handy toolbox for managing files, directories, and checking if they exist or not.
# Import the os module
import os
math: Think of the math module as your trusty calculator in Python. It's packed with functions for doing math operations like square roots, trigonometry, and rounding numbers.
# Import the math module
import math
random: Feeling lucky? The random module is here to help! It's like a magic hat that pulls out random numbers or shuffles lists, adding a dash of unpredictability to our programs.
# Import the random module
import random

# Generate random integers within a range
random_number = random.randint(1, 10)  # Generates a random integer between 1 and 10

datetime: Ever need to work with dates and times in your code? That’s where the datetime module comes in handy. It's like a calendar that helps us create, format, and manipulate dates and times effortlessly.
# Import the datetime module
import datetime

# Get the current date and time
current_datetime = datetime.datetime.now()

Client's Interview Process: 1st Round : HR Screening 2nd Round : Technical Interview with Hiring Manager 3rd Round : Skip Level Interview 4th Round : Offer Roll Out

 

HR screening

…………….. is the initial process in recruitment to evaluate job applicants and determine if they meet the basic qualifications and requirements for a role, with the goal of filtering out unsuitable candidates and identifying the best fits for further evaluation. This process can involve reviewing resumes and cover letters, conducting brief phone or video interviews (screening interviews), administering skills assessments, and checking background information

 

A "technical HR interview"

…………………..is often used to describe the HR interview that follows a technical screening, where an HR representative assesses your soft skills, cultural fit, and motivation, in addition to your understanding of the technical requirements of the role

 

A skip-level interview

………………………… is a conversation where a senior manager meets directly with an employee who is not their direct report, effectively "skipping" a level of management to gather unfiltered feedback, understand operational challenges, and connect with the broader workforce. This can also occur as the final stage of a job interview for a senior executive to assess a candidate's cultural fit and potential, bypassing their potential line manager for a more casual, personal discussion

 

Offer roll out

…………………………" refers to the process of introducing or launching a new offer, such as a job offer, product, service, or policy, to a wider audience or market. The term combines "offer" (an explicit promise or proposal) with "roll out" (to deploy or make available for the first time). The process is systematic and often involves a gradual or phased deployment. 

15 COMPUTER LANGUAGES KNOW PERSON CAN BE CALL AS EXPERT IN PROGRAMMING OR NOT ……………………………..Answer is NO ………………........................... WHY ……KNOWING 15 COMPUTER LANGUAGES DOES NOT AUTOMATICALLY QUALIFY SOMEONE AS AN "EXPERT" IN PROGRAMMING?????.....................prepared by Mr RAM A DAYINABOYINA ,INDIAN EXPERT in COMPUTER PROGRAMMING LANGUAGES ................................................…………………….25 YEAS OF ENGINEERING EXPERTISE WITH 2 MASTER DEGREES AND 3 UNIVERSITY(Indian & foreign ) WORK Experience AND MANY ENGINEERING COLLEGES WORK EXPERIENCES WITH VARIOUS DESIGNATIONS AND HEAD OF THE DEPT FOR MASTERS KNOWING 15 COMPUTER LANGUAGES ,AUTOMATICALLY QUALIFY SOMEONE AS AN "EXPERT" IN programming. ........................................various factors like ............... While a broad knowledge of languages demonstrates a wide exposure to different paradigms and syntax, true expertise in programming encompasses more than just linguistic fluency.

 Factors that define programming expertise include:

·         Deep understanding of core computer science concepts: 

This includes data structures, algorithms, operating systems, networking, and software design principles.

·         Problem-solving abilities: 

An expert can effectively analyse complex problems, design efficient solutions, and implement them robustly.

·         Software engineering best practices: 

This involves understanding version control, testing methodologies, debugging techniques, code optimization, and maintainability.

·         Specialization in specific domains: 

Expertise often involves deep knowledge within a particular area, such as web development, machine learning, embedded systems, or game development.

·         Ability to adapt and learn new technologies: 

The field of programming evolves rapidly, and an expert can quickly grasp new languages, frameworks, and tools.

While knowing 15 languages suggests a strong foundation and a willingness to learn, the depth of understanding within each language and the application of that knowledge to solve complex problems are the true indicators of programming expertise. A person might know many languages superficially, but lack the deeper skills required to be considered an expert. Conversely, someone might be an expert in a few key languages and their associated ecosystems, demonstrating profound understanding and practical application

My FaceBook.................

 

Python program to Check if a File Exists or not.............program 48/50.........

To print the content of a file in Python only if it exists, you can combine a file existence check with file reading operations.

Here's how to achieve this using the os.path.exists() function and a with statement for file handling:

Python

import os

file_path = "your_file_name.txt"  # Replace with the actual file path

if os.path.exists(file_path):
    # The file exists, now open and print its content
    try:
        with open(file_path, 'r') as file:
            content = file.read()
            print(f"Content of '{file_path}':")
            print(content)
    except Exception as e:
        print(f"An error occurred while reading the file: {e}")
else:
    print(f"The file '{file_path}' does not exist.")

Explanation:

• import os: 

  This line imports the os module, which provides functions for interacting with the operating system, including file system operations.
• file_path = "your_file_name.txt": 

  This variable stores the path to the file you want to check and potentially print. Remember to replace "your_file_name.txt" with the actual name and path of your file.
• if os.path.exists(file_path):: 

  This is the core of the existence check. os.path.exists() returns True if the specified file_path refers to an existing file or directory, and False otherwise.
• with open(file_path, 'r') as file:: 

  If the file exists, this block opens the file in read mode ('r'). The with statement ensures that the file is automatically closed even if errors occur.
• content = file.read(): 

  This reads the entire content of the file and stores it in the content variable.
• print(f"Content of '{file_path}':") 

  and print(content): These lines print a header and then the actual content of the file.
• except Exception as e:: 

  This try-except block is included for robust error handling during file reading, in case issues like permission errors arise even if the file exists.
• else:: 

  If os.path.exists() returns False, this block is executed, indicating that the file was not found.
• .................................Using os.path.exists()

This method is part of the os module and returns True if the specified file exists; otherwise, it is False.

import os
# Python Check if file exists
if os.path.exists('filename.txt'):
    print("File exists")
else:
    print("File does not exist")

Get number of characters, words, spaces and lines in a file - Python............ concept 48/50 ...........Number of words in text file: 25 Number of lines in text file: 4 Number of characters in text file: 91 Number of spaces in text file: 21

 def counter(fname):

    # variable to store total word count.........  num_words = 0

   # variable to store total line count..........  num_lines = 0

   # variable to store total character count..........  num_charc = 0

   # variable to store total space count..................num_spaces = 0

    # opening file using with() method  so that file gets closed   after completion of work

    with open(fname, 'r') as f:

    # loop to iterate file line by line

        for line in f:

   # incrementing value of num_lines with each iteration of loop to store total line count

            num_lines += 1

     # declaring a variable word and assigning its value as Y  because every file is supposed to start with a word or a character

            word = 'Y'

  # loop to iterate every line letter by letter

            for letter in line:

  # condition to check that the encountered character is not white space and a word

                if (letter != ' ' and word == 'Y'):

 # incrementing the word count by 1

                    num_words += 1

 # assigning value N to variable word because until  space will not encounter a word can not be completed

                    word = 'N'

 # condition to check that the encountered character is a white space

                elif (letter == ' '):

 # incrementing the space count by 1

                    num_spaces += 1

  # assigning value Y to variable word because afterwhite space a word is supposed to occur

                    word = 'Y'

  # loop to iterate every character

                for i in letter:

  # condition to check white space

                    if(i !=" " and i !="\n"):

  # incrementing character count by 1

                        num_charc += 1

  # printing total word count  ...... print("Number of words in text file: ",  num_words)

 # printing total line count.........print("Number of lines in text file: ",   num_lines)

 # printing total character count....print('Number of characters in text file: ',num_charc)

  # printing total space count............ print('Number of spaces in text file: ',num_spaces)

    # Driver Code:

if __name__ == '__main__':

    fname = 'File1.txt'

    try:

        counter(fname)

    except:

        print('File not found')

Reading images in Python............python program 2ndB.Tech...47/50

 import cv2

 

# Define the path to your image file

image_path = "path/to/your/image.jpg"  # Replace with the actual path to your image

 

# Read the image

# cv2.imread() returns a NumPy array representing the image data

# The second argument (flags) is optional:

# cv2.IMREAD_COLOR (default): Loads a color image (BGR format)

# cv2.IMREAD_GRAYSCALE: Loads a grayscale image

# cv2.IMREAD_UNCHANGED: Loads image as is, including alpha channel if present

img = cv2.imread(image_path, cv2.IMREAD_COLOR)

 

# Check if the image was loaded successfully

if img is None:

    print(f"Error: Could not load image from {image_path}")

else:

    print(f"Image loaded successfully. Shape: {img.shape}")

    # You can now process or display the image (e.g., using cv2.imshow)

    cv2.imshow("Loaded Image", img)

    cv2.waitKey(0)  # Wait indefinitely until a key is pressed

    cv2.destroyAllWindows() # Close all OpenCV windows

• hon provides simple tools to work with images. Whether you're looking to open, view or save images there are many libraries to help. Let's see how to process the images using different libraries.

1. Using ImageIO

ImageIO is used for reading and writing images in various formats like PNG, JPEG, GIF, TIFF and more. It's particularly useful for scientific and multi-dimensional image data likie medical images or animated GIFs. It’s simple and works across different platforms. You can download the image from here.

import imageio.v2 as iio

import matplotlib.pyplot as plt

​

img = iio.imread("g4g.png")

​

plt.imshow(img)

Output:

ImageIO

2. Using OpenCV

OpenCV (Open Source Computer Vision Library) is one of the most popular tools for real-time computer vision. It supports image processing, face detection, video analysis, object detection and much more. It can Can apply filters, transformations and can bes used for face/object recognition. This library is cross-platform that is it is available on multiple programming languages such as Python, C++, etc. 

import cv2

​

img = cv2.imread('g4g.png') 

​

cv2.imshow('image', img)

Output:

OpenCV

3. Using Matplotlib

Matplotlib is a multi-platform data visualization library built on NumPy arrays and designed to work with the broader SciPy stack. It was introduced by John Hunter in the year 2002. Matplotlib comes with a wide variety of plots. Plots helps to understand trends, patterns and to make correlations. They’re typically instruments for reasoning about quantitative information. 

import matplotlib.image as mpimg
import matplotlib.pyplot as plt

img = mpimg.imread('g4g.png')

plt.imshow(img)

Output:

Matplotlib

4. Using PIL

PIL is the Python Imaging Library which provides the python interpreter with image editing capabilities. Pillow is user friendly and easy to use library developed by Alex Clark and other contributors. 

from PIL import Image

img = Image.open('g4g.png')

img.show()

print(img.mode)

Output:

PIL

These Python libraries make image reading and processing easy and efficient for all kinds of tasks. Choose the one that best fits your needs and start exploring image data with just a few lines of code.