The command line is the place where executable commands are given to the operating system. In Python, command-line arguments allow users to pass information to a script when it's executed from the terminal.  A Python script can be executed by writing its name in front of the Python executable on the command line. Following is the example command which executes the Python file named sample.py - python sample.py If we need to pass arguments to a script, we can pass them at the time of execution, separating them by a space as shown below - python test.py Hello TutorialsPoint Python ... Read More

In Python, both single quotes (') and double quotes (") are used to define string literals, and they function in the same way.  For example, if a string contains a single quote character, like in a contraction, i.e., it’s by using double quotes avoids the need for escape characters by making the code cleaner and easier to read. Similarly, single quotes can be useful when a string contains double quotation marks. Single Quotes in Python Single quotes are used to wrap small and short strings in Python, such as string literals or identifiers. We must remember that using single quotes ... Read More

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. To maintain the value of the expression, this statement supplies an expression and a variable name as a label. Following is the syntax of using the statement in python − variable = expression Creating Multi-Line Statements in Python Statements in Python are often ... Read More

To run a Python file in a directory, we generally use the Python or python3 command. However, it only runs a single file at a time. But executing one file each on a shell script seems hectic. Therefore, we must come up with a way to execute all files present in a directory simultaneously. In this article, let's go through the different methods to run all the Python files in a directory at a time. Using subprocess Module Using exec() function Using shell scripts Using multiprocessing Using subprocess.run()  The subprocess ... Read More

In Python, determining the current directory of program execution is a common task, especially when working with file operations, configuration of files or dynamically accessing resources. The current directory refers to the location from which the script is being run, but not necessarily where the script file resides. Python provides two main ways to retrieve the current directory information, 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 the relative file paths ... Read More

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 by making it critical to maintain consistency. Vim Editor Vim is a highly efficient text editor which offers flexible configuration options to automate indentation by 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 indentation ... Read More

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 the developers can set up observers that watch specific directories and respond to the changes ... Read More

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 as ... Read More

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 that being able to accept file input directly from the command line, which enhances the flexibility and usability of our program. Python provides built-in modules such as sys and argparse that make our task straightforward and efficient. In this article, we are going to see the different methods that are used to read a file from the command line using Python - Using sys.argv() In Python, ... Read More

Importing Python Modules by Full Path Python has various tools to import modules dynamically, where the full path is accessible. In this article, we will explore various methods to import Python modules when the full path is given, and each method has its own advantages for various use cases. In Python, it is common to import modules using statements such as import os or from mypackage,  import utils. But, Imagine a situation, Where we need to import the Python module given the full path, Let's dive into the article to learn more about it. Using importlib.util.spec_from_file_location() The Python provides functions ... Read More