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Python Articles
Page 712 of 855
How can I make one Python file run another?
In Python, it is often necessary to execute another file. This is common in cases such as running helper scripts, triggering workflows, or executing test cases. Python provides several ways to execute one file using another. Depending on the requirement, whether we want to reuse functions, execute a file directly, or run it as a subprocess. Let us look at these solutions one by one ? Understanding Python Script Execution Before proceeding with how to run one Python file from another, it's important to understand how Python scripts are executed. When we run a Python file ...
Read MoreHow do I copy a binary file in Python?
In Python, you may need to duplicate binary files such as images, videos, or executables. This article explores efficient methods for copying binary files in Python, covering both built-in functions and manual approaches. What is Binary Format? Binary format stores data as raw byte sequences (0s and 1s) rather than readable text characters. Binary file copying duplicates files byte-by-byte without interpreting content, essential for non-text files like images (.jpg, .png), audio/video (.mp3, .mp4), executables (.exe), and PDFs. Using shutil.copy() The shutil.copy() function copies file contents and basic permissions from source to destination ? Syntax ...
Read MoreHow to find all files in a directory with extension .txt in Python?
Searching for specific files in a directory is a common task that can be accomplished using different tools in Python. In this article, we will see how to find all the files in a directory with extension .txt using Python. Here are different approaches, let's see each one in detail ? Using os.listdir() The os.listdir() function from Python's built-in os module returns a list of file and directory names in the given directory path. Example In this example, we use os.listdir() with list comprehension to filter files ending with ".txt" ? import os ...
Read MoreWhat is the common header format of Python files?
The common header format of Python files is a simple and essential element that provides context and documentation. In Python, we commonly use a docstring as the header format − a special comment enclosed within triple quotes placed at the beginning of the script. Standard Header Structure The standard Python file header uses a docstring with key information about the script ? """ File: filename.py Author: Your Name Date: Date of creation/modification Description: A brief explanation of what this script does. """ Header Components File: The name of the Python file (e.g., ...
Read MoreWhat do the python file extensions, .pyc .pyd .pyo stand for?
Python uses different file extensions to distinguish between various types of files in the Python ecosystem. Understanding these extensions helps developers work more effectively with Python code, modules, and compiled bytecode. Python File Extensions Overview The most common Python file extensions and their purposes are ? .py: Standard Python source code files .pyc: Compiled bytecode files for faster loading .pyo: Optimized bytecode files (deprecated in Python 3.5+) .pyd: Python extension modules on Windows (similar to .dll files) .pyw: Windows GUI scripts that run without a console window .py Files The .py extension identifies ...
Read MoreWhat are .pyc files in Python?
We usually write programs in Python and save the file with .py extension. However, there is another file type called .pyc, which is automatically generated by the Python interpreter while executing the source code. What is a .pyc File? When you execute a Python program, the Python interpreter doesn't directly execute the .py file; instead, it parses the source code, compiles it into bytecode (a low-level representation of the Python source code), and stores it as the .pyc file. Further, this bytecode is executed with the Python Virtual Machine (PVM). A .pyc file is usually created when ...
Read MoreHow to set creation and modification date/time of a file using Python?
The creation and modification datetime of a file in Python are defined as the timestamps associated with when the file was created and when it was last modified. Creation datetime: It is defined as the timestamp when a file was initially created or added to the file system. Modification datetime: It is defined as the timestamp when the file's content was last modified or updated. These datetimes provide valuable information such as the file's age, recent changes, or when it was first introduced. In Python, you can retrieve these timestamps using functions like os.path.getctime() and os.path.getmtime(), and ...
Read MoreHow to create a unique directory name using Python?
Creating unique directory names is essential when working with temporary files or avoiding naming conflicts. Python's tempfile module provides a secure way to create unique temporary directories with proper permissions. Using tempfile.mkdtemp() The mkdtemp() function creates a temporary directory in the most secure manner possible. There are no race conditions in the directory's creation, and it's readable, writable, and searchable only by the creating user ID ? import tempfile import os # Create a unique temporary directory temp_dir_path = tempfile.mkdtemp() print(f"Created directory: {temp_dir_path}") # Check if directory exists print(f"Directory exists: {os.path.exists(temp_dir_path)}") # Clean ...
Read MoreHow to rename multiple files recursively using Python?
The act of renaming multiple files recursively in Python can be a useful task when it is required to change the names of multiple files within a directory and its subdirectories. If you need to replace certain characters, add prefixes or suffixes, or completely change the file names, Python has powerful tools to accomplish such operations. In this article, we explore different approaches to renaming multiple files recursively using Python ? Using os.walk() to Traverse the Directory Tree The os.walk() function from the os module is used to traverse the directory tree and access files and directories within ...
Read MoreHow to create a filesystem node using Python?
A filesystem node represents any entity in the file system, such as files, directories, or symbolic links. Python provides powerful modules like os and pathlib to create and manipulate these filesystem nodes programmatically. Filesystem nodes have attributes like names, sizes, permissions, and timestamps. You can create, rename, delete, and navigate through them to perform operations like reading files, creating directories, and checking properties. Creating Directories Using os.mkdir() The os.mkdir() function creates a single directory ? import os # Create a single directory directory_path = "new_directory" os.mkdir(directory_path) print(f"Directory '{directory_path}' created successfully!") ...
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