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Articles by Niharikaa Aitam
Page 7 of 8
How do we use Python in script mode?
Python is a high-level programming language that helps users to run programs and integrate systems efficiently. In Python, code can be executed in two ways ? Interactive Mode Script Mode In this article, we will learn how to execute a Python program in script mode, which is the preferred method for writing larger programs and saving them for future use. What is Python Script Mode? Script mode in Python allows us to write Python code in files with the .py extension and run the entire program at once. This mode is suitable for writing ...
Read MoreHow do we use Python in interactive mode?
Python is a high-level programming language that helps users run programs efficiently. In Python, code can be executed in two ways − Interactive Mode Script Mode In this article, we will learn how to execute Python code in Interactive mode. The commands are similar across Windows, Linux, and macOS. What is Interactive Mode? Interactive mode in Python is a built-in feature that allows users to execute Python commands one line at a time. This mode is useful for testing small code snippets, debugging, or learning Python hands-on. The Interactive mode is a live ...
Read MoreWhat is the difference between single and double quotes in python?
In Python, both single quotes (') and double quotes (") are used to define string literals, and they function identically. The choice between them often depends on the content of your string and coding conventions. For example, if a string contains a single quote character (like in contractions such as "it's"), using double quotes avoids the need for escape characters, making the code cleaner and more readable. Similarly, single quotes are useful when a string contains double quotation marks. Single Quotes in Python Single quotes are commonly used to wrap strings in Python. However, you must be ...
Read MoreHow do we write Multi-Line Statements in Python?
A statement is a logical instruction in Python that the Python interpreter can read and execute. It could be an expression or an assignment statement in Python. Python's assignment statement is fundamental. It specifies how an expression generates and stores objects. In a simple assignment, we create new variables, assign values to them, and alter them. Following is the syntax of using the statement in Python ? variable = expression Creating Multi-Line Statements in Python Statements in Python are often written on a single line. The statement is concluded by the newline character. But ...
Read MoreWhat is the best way to run all Python files in a directory?
Running all Python files in a directory simultaneously can save time and effort. Python offers several approaches including subprocess for isolation, exec() for in-process execution, shell scripts for system-level control, and multiprocessing for parallel execution. Using subprocess.run() The subprocess module runs Python scripts as separate processes, ensuring isolation between them. This is the safest method as each script runs independently. Example Here's how to execute all Python files in a directory using subprocess ? import subprocess from pathlib import Path # Define the directory containing Python files directory = Path("./scripts") # Loop ...
Read MoreHow to find current directory of program execution in Python?
In Python, determining the current directory of program execution is a common task, especially when working with file operations, configuration files, or dynamically accessing resources. The current directory refers to the location from which the script is being run, not necessarily where the script file resides. Python provides two main ways to retrieve the current directory: using the os module and the pathlib module. Significance of the Current Directory The current directory in Python is the folder from which our script is being executed. It's important to find the current directory because all relative file paths are ...
Read MoreHow to setup VIM autoindentation properly for editing Python files?
When programming in Python, proper indentation is essential as the language uses it to define the structure of the code such as loops, functions and conditionals. Even minor mistakes in indentation can lead to errors or unexpected behavior, making it critical to maintain consistency. Vim Editor Vim is a highly efficient text editor which offers flexible configuration options to automate indentation, ensuring that our code is properly formatted according to Python's standards. By adjusting Vim's settings we can configure it to handle indentation in Python files with ease. This includes converting tabs to spaces, setting the appropriate ...
Read MoreHow to monitor Python files for changes?
Monitoring Python files for changes is essential in many development and automation scenarios such as triggering automatic reloads, running tests, or updating services when the source code is modified. This is particularly useful in web development, machine learning pipelines or custom tooling where real-time responsiveness to file updates is beneficial. One effective way to achieve this in Python is by using the watchdog library which is a simple and efficient tool that listens for file system events like creation, modification, and deletion. With watchdog library, developers can set up observers that watch specific directories and respond to the ...
Read MoreHow to write into a file from command line using Python?
Through the command line, we can easily create dynamic scripts that modify or generate files based on user input. This functionality is useful for generating logs, exporting data, or saving outputs from calculations. The following are the basic steps we need to follow to write data into a file from the command line ? Accept the file name and optional data from the command line. Open the specified file in write mode. Write the content to the file. Handle possible errors such ...
Read MoreHow to read a file from command line using Python?
Reading files from the command line is a common task in many Python scripts and automation workflows. Whether we're building a simple utility to process text files or developing a complex data analysis tool, being able to accept file input directly from the command line enhances the flexibility and usability of our program. Python provides built-in modules such as sys and argparse that make this task straightforward and efficient. In this article, we'll explore different methods to read a file from the command line using Python. Using sys.argv In Python, sys.argv is a list provided by the ...
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