File Handling in Python File handling in Python involves interacting with files on your computer’s storage system. This includes creating, opening, reading, writing, and closing files. Python provides a simple and efficient way to work with files through built-in functions and methods. Basic File Operations Opening a File The open() function is used to open … Read more
What is a Standard Library? Python’s standard library is a vast collection of pre-written Python modules that provides functionalities for a wide range of tasks without requiring external dependencies. It’s included with every Python installation. Core Modules The standard library is divided into several core modules that cover fundamental operations: Other Notable Modules Beyond the … Read more
Creating a Package A package is essentially a directory containing Python modules. To designate a directory as a package, you must include an empty file named __init__.py within it. Steps to create a package: Example: Using a Package To use a package, you import it using the dot notation: Python or Python Example: Python __init__.py … Read more
Importing a module is the process of bringing functions, classes, and variables defined in one Python file (module) into another. This allows you to reuse code and organize your codebase efficiently. The import Statement The primary way to import a module is using the import statement: Python This imports the entire module into your current … Read more
Modules A module is a single Python file containing definitions and statements. It can define functions, classes, and variables. Modules help organize code into logical units and promote code reusability. Key points: Example: Python Packages A package is a directory of Python modules that are organized into a hierarchical structure. It allows for better organization … Read more
Scope Scope defines the region of a program where a variable is accessible. It determines where you can use a variable without causing errors. Types of Scope: Lifetime Lifetime refers to the period during which a variable exists in memory. Important Points In summary: By understanding these concepts, you can write cleaner, more efficient, and … Read more
Lambda Functions: Anonymous Functions What is a Lambda Function? A lambda function is a small, anonymous function defined using the lambda keyword. Unlike regular functions defined with the def keyword, lambda functions don’t have a name. They are typically used for short, simple operations. Syntax Python Example Python In this example: Key Points Common Use … Read more
Function Arguments Function arguments are values passed to a function when it’s called. They provide input to the function, allowing it to perform calculations or operations based on the given data. Types of Arguments: Return Values A function can return a value using the return statement. The returned value can be used in other parts … Read more
Defining a Function A function is a block of code that performs a specific task. In Python, you define a function using the def keyword followed by the function name, parentheses, and a colon. The code block that defines the function is indented below the colon. Syntax: Python Example: Python Calling a Function To execute … Read more
Functions: The Building Blocks of Code What is a Function? A function is a reusable block of code that performs a specific task. It takes input, processes it, and often returns an output. Functions are essential for breaking down complex problems into smaller, manageable units, improving code readability, and promoting code reusability. Basic Structure of … Read more