Add a prefix to all the filenames in a directory

100%

Add a prefix to all the filenames in a directory

✓ Published0🌍 Public

Last edited Oct 20, 2011

Created on Oct 20, 2011

This example demonstrates a simple file-renaming script that adds a prefix to every text file in the current directory. The code uses Python’s `glob` module to collect all filenames ending in `.txt` and then applies `os.rename` to prepend the string `brad_` to each file. The process is iterative, renaming files one by one in place, with no rendering or data visualization involved.

AI-generated description

Similar vizzes

Loading thumbnail…

Rename files in a directory by removing non-alphanumeric characters that shouldn't be in a filename.

This example shows a Python script that recursively renames files and directories by replacing whitespace with underscores and stripping non-alphanumeric characters except periods, underscores, and hyphens. It walks the file system using `os.walk` and applies regular-expression substitutions via the `re` module, then moves each item with `shutil.move`. The script operates on user-specified directories or the current working directory, printing each rename action to standard error as it proceeds.

LLeeMendelowitz

58% match

Loading thumbnail…

Renaming files in many sub-folders. Requirement: There is a huge directory list which has many sub-directories and one file in each sub-directory, which has to be renamed as sub-directory name with the original extension. Last sub-directory name is always 8 chars. After renaming is done, it has to be moved to a different folder. Wrote a small Python utility for this requirement.

This example demonstrates a Python utility that renames a single file inside each sub-directory to match the sub-directory name while preserving the original extension, then moves it to a destination folder. It shows how `os.walk` traverses the directory tree, identifies the last 8 characters of each sub-directory name via string slicing, and uses `os.rename` to relocate and rename the file to `D:/GBR/`. The code relies on the standard `os` library for file system operations.

PP7h

57% match

Loading thumbnail…

Remove first prefix from filename

This example demonstrates a shell script that renames files by stripping the first prefix from each filename, up to and including the first period. It shows a concise file-management task rather than a data visualization. The code iterates over all files in the current directory using a `for` loop and applies the `mv` command with parameter expansion (`${file#*.}`) to remove the shortest prefix ending in a period. No external libraries or rendering APIs are involved; the logic relies solely on standard Unix shell constructs and the `mv` utility. The data source is the filesystem, and the output is the renamed files.

HHypercubed

57% match

Loading thumbnail…

Gist 1ba2e157aea3eefadc42

This example shows how a large synthetic file hierarchy is created on a local file system, visualized as a tree-like directory structure. The code uses Python’s `os` module to programmatically create 50 top-level directories, each containing 1,000 subdirectories, and each subdirectory containing 1,000 text files, for a total of 50 million files. The file contents are identical placeholder text, and the visualization likely represents the nested structure using a tree or treemap layout, though the code itself only generates the data, not the graphic. No external visualization libraries are used in the provided script.

JJonasHeylen

46% match

Loading thumbnail…

csv concatenation

This example demonstrates the simple concatenation of multiple CSV files into a single output file, combining rows from all input files without any transformation or filtering. The script uses the `csv.reader` and `csv.writer` APIs from Python’s standard library to parse and write each row, while the `glob` module collects every `.csv` filename in a specified directory, and `os.chdir` changes the working directory to that folder. All rows are appended into a flat list, then written to a designated output path. The visualization shows the raw data-merging process, not a graphical chart, and relies solely on file I/O and CSV handling.

IIanHopkinson

46% match

Loading thumbnail…

[创建临时文件和文件夹] #python

This example demonstrates four Python recipes for creating temporary files and directories using the `tempfile` module. It shows anonymous temporary files via `TemporaryFile`, named temporary files with `NamedTemporaryFile` and its configurable `prefix`, `suffix`, and `dir` parameters, and temporary directories through `TemporaryDirectory`. The code also queries the system’s temporary file location with `gettempdir()`. Each use case is illustrated with a `with` block, emphasizing automatic cleanup, and the example writes and reads text to confirm functionality.

SShawn91

46% match

Loading thumbnail…

Macro script to rename file on libre office. You should put this file on "C:\Program Files (x86)\LibreOffice 5\share\Scripts\python" and insert it as macro on toolbar.

This macro script for LibreOffice renames the current document through a custom dialog, saving it under a new name and deleting the original file. It demonstrates the use of the Uno API to access the desktop, current document, and dialog controls, along with utility functions like `fileUrlToSystemPath`, `storeToURL`, and `loadComponentFromURL`. The script also employs `zipfile` and `os` for file operations, though their roles are not explicitly shown in the visible logic. It relies on Python’s `uno` module and the `com.sun.star.awt` interfaces for dialog creation and event handling.

Aalbcunha

46% match

Loading thumbnail…

Rename md5 files (https://unix.stackexchange.com/questions/392129/rename-all-files-in-a-directory-to-the-md5-hash-of-their-filename-not-content)

This example demonstrates a shell one-liner that renames every file in the current directory to the MD5 hash of its filename while preserving the original file extension. The script iterates over each file with a `for` loop, computes the hash using `md5sum` on the filename with `echo -n` to avoid a trailing newline, and then prints the original and new names with `echo`. It uses parameter expansion to strip the hash’s trailing metadata and extract the extension via `${i##*.}`. The output shows the mapping without actually performing the rename, as the command only prints the `--` separated pair.

RRasinj

46% match