Basics of Python Programming - 2nd Edition : Learn Python in 30 days (Beginners approach)

Mastering the Python fundamentals with practical examples KEY FEATURES ● The book takes a beginner-friendly approach with practical examples, multiple choice questions, and solved exercises to help readers understand Python better. ● The book maintains clear explanations with concise chapters, making it suitable for those new to programming. ● This edition also covers NumPy for array manipulations and complex problem-solving. It teaches how to use Tkinter to create user-friendly applications with interactive interfaces. DESCRIPTION The basics of Python are the book's main focus. With practical examples, students will understand the fundamentals of Python. This book is designed in a way that should make every example understandable to the readers. In addition, from the perspective of a competitive examination, the book offers multiple-choice questions, true/false questions, and practical solved exercises. Through this book, the readers will be able to learn Python basics. This includes setting up your environment and manipulating data. Additionally, they will also learn how to master control flow with conditional statements and loops for more responsive programs and utilize functions for organizing code and file handling to work with local data. Learners will also explore object-oriented programming (OOP) and essential libraries like NumPy for advanced programming. This edition brings a new horizon of NumPy and Tkinter for numerical computing tasks like array manipulations, tackling complex problems, and building user-friendly applications with interactive graphical interfaces, respectively. From every chapter, the reader will learn the programming fundamentals and will be able to execute the programs on their own. WHAT YOU WILL LEARN ● Install and run Python programs, understand variables, user input, and operators. ● Organize code and improve reusability by defining and using functions. ● Store and manage data efficiently using lists, tuples, and dictionaries. ● Organize data effectively using iterators and generators for memory optimization. ● Gracefully handle errors and exceptions to improve program robustness. WHO THIS BOOK IS FOR This book is intended for students who are new to the study of Python. Additionally, it benefits those enrolled in diploma-level studies or pursuing undergraduate studies or a master's degree at state universities or colleges. Cover Title Page Copyright Page Dedication Page About the Author About the Reviewers Acknowledgement Preface Table of Contents 1. Introduction to Python Variables, Datatypes and Operators Introduction Structure Objectives Python installation Exploring Python Example 1.1: Program to print Hello World Variable declaration and getting user input in Python Example 1.2: Example of user input Example 1.3: Addition of two numbers Example 1.4: Write a program to swap two values Python datatypes Example 1.5: Example of integer, float, string datatypes, and type conversion Operators in Python Example 1.6: Arithmetic operators in Python Relational operators Example 1.7: Relational operators in Python Logical, bitwise and assignment operators Example 1.8 Example of logical, bitwise, left shift, right shift and assignment operators Identity operators Example 1.9: Example of is and isnot identity operator Membership operators Example 1.10: Using the membership operator Precedence of operators type() function in Python Example 1.11: Write a program for the type() function Conclusion Points to remember Exercises 2. Conditions and Loops Introduction Structure Objectives If condition Example 2.1: Example of if condition Example 2.2: Example of if condition using and, or operators Example 2.3: Example of checking conditions using and, or operators Nested-if condition Example 2.4: Example of nested-if conditions to find the greatest of three numbers Loops Example 2.5: Example of a while loop Example 2.6: Sum of first five numbers using the while loop Example 2.7: Demonstrating break statement in a while loop Example 2.8: Example for finding a palindrome number using a while loop Example 2.9: Multiplication of a number using a while loop Example 2.10: Example of for loop Example 2.11: Example of the list and for loop Example 2.12: Print the numbers using range() function in for loop Example 2.13: Write a program to display odd numbers using for loop Example 2.14: Write a program using for loop with arrays Example 2.15: Find the factorial of a number using for loop Example 2.16: Program to find the sum of all numbers stored in a list using for loop Example 2.17: Finding prime number taking input from the user Break and continue statement Example 2.18: Write a program to display the prime numbers from 1 to 20 using for loop Conclusion Questions Points to remember 3. Arrays and Functions Introduction Structure Objectives Arrays Example 3.1: Write a program for arrays using append() function Example 3.2: Example of membership operator in Example 3.3: Example of in operator and if condition Example 3.4: Example of len() function in array Example 3.5: Display values from 0 to 9 using for loop Example 3.6: Display values from 0 to 9 using arrays and append() function Functions Example 3.7: Passing parameters in a function Local and global variables in functions Example 3.8: Local and global variable Example 3.9: Write a program for a variable having global scope Example 3.10: Write a calculator program using the concept of functions Example 3.11: Function returning the absolute value of a number Example 3.12: Write a program to sort array elements Example 3.13: Write a program to find the square of a number using functions Lambda function Example 3.14: Adding numbers using the lambda function Conclusion Points to remember Exercises 4. Lists, Tuples, Iterators Generators, and Sets Introduction Structure Objectives Lists Example 4.1: Example of using the append() function in lists Slicing Example 4.2: Example of slicing a list and for storing multiple data items Example 4.3: Example of Slicing using double colon for list sequences Tuples Example 4.4: Example for concatenation of tuples Example 4.5: Nested tuples Python iterators Example 4.6: Write a program to print a list of courses using iterators Example 4.7: Write a program using iterators through loops Python generators Example 4.8: Write a program for generators Example 4.9: Simplify the Example 4.8 using loops Sets Example 4.10: Example of a set and its operations Conclusion Points to remember Exercises 5. Dictionaries and Modules Introduction Structure Objectives Dictionaries in Python Example 5.1: Write a program for the dictionary Example 5.2: Accessing values in a dictionary using index and arrays Example 5.3: Dictionary example for addition and deletion of key-value pairs Nested dictionary Example 5.4: Example of nested dictionary Example 5.5: Counting the number of digits, lowercase, uppercase, and vowels in a sentence pop() method in a dictionary Example 5.6: Example of pop() method in dictionary Modules Example 5.7: Using modules Example 5.8: Example of using dictionary using modules Example 5.9: Example of importing mathematical functions in a module Conclusion Points to remember Exercises 6. File Handling and Databases Introduction Structure Objectives File and modes used in file handling Example 6.1: Example for reading a file Example 6.2: Example for reading every line of the file Example 6.3: Write data into file using w mode Example 6.4: Write a program to illustrate append mode Databases Data definition language Data query language Data manipulation language Data control language Transaction control language Example 6.5: Write a program for database and table creation Example 6.6: Program to insert a record into a table Example 6.7: To read records from the table and display them Example 6.8: Write a program to update the data Example 6.9: Write a program to delete the data Conclusion Points to remember Exercises 7. Object-Oriented Programming Introduction Structure Objectives Classes and objects Example 7.1: Writing a program for class and objects Example 7.2: Writing a program for functions in a class Inheritance Example 7.3: Writing a program for inheritance Overriding Example 7.4: Writing a program for overriding Example 7.5: Write a program for inheritance and function overriding Encapsulation Example 7.6: Write a program for encapsulation restricting access to the private variables Example 7.7: Write the aforementioned example using public access specifier Conclusion Points to remember Exercises 8. Regular Expressions, Date and Time Introduction Regular expression for pattern matching Example 8.1: Write a program for substring function using regular expression Example 8.2: Regular expression program to search string Example 8.3: Write a program to check email ID pattern using the function Example 8.4: Write a program for validating string values only Example 8.5: Write a program for validating numerical values only Example 8.6: Regular expression to validate the mobile number digits Date and time functions Example 8.7: Write a program to display time Example 8.8: Write a program to display datetime using now function Example 8.9: Write a program to obtain the calendar month using calendar module Conclusion Points to remember Exercises 9. Exception Handling Introduction Objectives Exception Example 9.1: Program of exception error occurred due to inappropriate values Example 9.2: Program of exception error raised due to different data types Example 9.3: Program of IOError exception Example 9.4: Program of ModuleNotFound exception Example 9.5: Write a program for division by zero exception Example 9.6: Example of assert statement for exception handling Conclusion Points to remember Exercises 10. NumPy and TKinter Introduction Structure Objectives 1-D array operations using NumPy Example 10.1: Write a program to create a simple 1D array from a Python list Example 10.2: Finding sum, mean, max, and min functions using NumPy Matrix addition and multiplication using NumPy Example 10.3: Write a program for matrix addition and multiplication using NumPy Fundamentals of Tkinter main application window Example 10.4: Example of Tkinter application window Label and button widget in Tkinter Example 10.5: Create a label and button widget in Tkinter Button click event and input from user in Tkinter Example 10.6: Example of button click event Example 10.7: Example of taking input from a user using the text field Example 10.8: Write a program for performing arithmetic operations Conclusion Points to remember Exercises Appendix: Practice Exercises with Solutions Sample programs Output prediction Multiple choice questions Fill in the blanks True/False